diff --git a/fastkml/geometry.py b/fastkml/geometry.py
index f341f6b1..50dd48e5 100644
--- a/fastkml/geometry.py
+++ b/fastkml/geometry.py
@@ -817,9 +817,9 @@ def geometry(self) -> Optional[geo.LinearRing]:
             return None
 
 
-class OuterBoundaryIs(_XMLObject):
+class BoundaryIs(_XMLObject):
     """
-    Represents the outer boundary of a polygon in KML.
+    Represents the inner or outer boundary of a polygon in KML.
 
     Attributes
     ----------
@@ -905,19 +905,6 @@ def __repr__(self) -> str:
             ")"
         )
 
-    @classmethod
-    def get_tag_name(cls) -> str:
-        """
-        Get the tag name for the OuterBoundaryIs object.
-
-        Returns
-        -------
-        str
-            The tag name.
-
-        """
-        return "outerBoundaryIs"
-
     @property
     def geometry(self) -> Optional[geo.LinearRing]:
         """
@@ -932,106 +919,34 @@ def geometry(self) -> Optional[geo.LinearRing]:
         return self.kml_geometry.geometry if self.kml_geometry else None
 
 
-registry.register(
-    OuterBoundaryIs,
-    item=RegistryItem(
-        ns_ids=("kml", ""),
-        classes=(LinearRing,),
-        attr_name="kml_geometry",
-        node_name="LinearRing",
-        get_kwarg=xml_subelement_kwarg,
-        set_element=xml_subelement,
-    ),
-)
+class OuterBoundaryIs(BoundaryIs):
+    """Represents the outer boundary of a polygon in KML."""
 
-
-class InnerBoundaryIs(_XMLObject):
-    """Represents the inner boundary of a polygon in KML."""
-
-    _default_nsid = config.KML
-    kml_geometry: Optional[LinearRing]
-
-    def __init__(
-        self,
-        *,
-        ns: Optional[str] = None,
-        name_spaces: Optional[Dict[str, str]] = None,
-        geometry: Optional[geo.LinearRing] = None,
-        kml_geometry: Optional[LinearRing] = None,
-        **kwargs: Any,
-    ) -> None:
+    @classmethod
+    def get_tag_name(cls) -> str:
         """
-        Initialize a Geometry object.
-
-        Parameters
-        ----------
-        ns : Optional[str], optional
-            The namespace for the KML element, by default None.
-        name_spaces : Optional[Dict[str, str]], optional
-            The namespace dictionary for the KML element, by default None.
-        geometry : Optional[geo.LinearRing], optional
-            The geometry to be converted to a KML geometry, by default None.
-        kml_geometry : Optional[LinearRing], optional
-            The KML geometry, by default None.
-        **kwargs : Any
-            Additional keyword arguments.
-
-        Raises
-        ------
-        GeometryError
-            If both `geometry` and `kml_geometry` are provided.
+        Get the tag name for the OuterBoundaryIs object.
 
-        Notes
-        -----
-        - If `geometry` is provided, it will be converted to KML geometries and
-            stored in `kml_geometry`.
-        - If `geometry` and `kml_geometry` are both provided, a GeometryError will be
-            raised.
+        Returns
+        -------
+        str
+            The tag name.
 
         """
-        if geometry is not None and kml_geometry is not None:
-            raise GeometryError(MsgMutualExclusive)
-        if kml_geometry is None:
-            kml_geometry = LinearRing(ns=ns, name_spaces=name_spaces, geometry=geometry)
-        self.kml_geometry = kml_geometry
-        super().__init__(
-            ns=ns,
-            name_spaces=name_spaces,
-            **kwargs,
-        )
+        return "outerBoundaryIs"
 
-    def __bool__(self) -> bool:
-        """Return True if any of the inner boundary geometries exist."""
-        return bool(self.kml_geometry)
 
-    def __repr__(self) -> str:
-        """Create a string (c)representation for InnerBoundaryIs."""
-        return (
-            f"{self.__class__.__module__}.{self.__class__.__name__}("
-            f"ns={self.ns!r}, "
-            f"name_spaces={self.name_spaces!r}, "
-            f"kml_geometry={self.kml_geometry!r}, "
-            f"**{self._get_splat()},"
-            ")"
-        )
+class InnerBoundaryIs(BoundaryIs):
+    """Represents the inner boundary of a polygon in KML."""
 
     @classmethod
     def get_tag_name(cls) -> str:
         """Return the tag name of the element."""
         return "innerBoundaryIs"
 
-    @property
-    def geometry(self) -> Optional[geo.LinearRing]:
-        """
-        Return the list of LinearRing objects representing the inner boundary.
-
-        If no inner boundary geometries exist, returns None.
-        """
-        return self.kml_geometry.geometry if self.kml_geometry else None
-
 
 registry.register(
-    InnerBoundaryIs,
+    BoundaryIs,
     item=RegistryItem(
         ns_ids=("kml",),
         classes=(LinearRing,),
diff --git a/fastkml/utils.py b/fastkml/utils.py
index 604d422b..2851cb5c 100644
--- a/fastkml/utils.py
+++ b/fastkml/utils.py
@@ -88,7 +88,4 @@ def find(
         The first instance of the given type in the given object or None if not found.
 
     """
-    try:
-        return next(find_all(obj, of_type=of_type, **kwargs))
-    except StopIteration:
-        return None
+    return next(find_all(obj, of_type=of_type, **kwargs), None)
diff --git a/tests/geometries/boundaries_test.py b/tests/geometries/boundaries_test.py
index 3ee79abc..8e422a68 100644
--- a/tests/geometries/boundaries_test.py
+++ b/tests/geometries/boundaries_test.py
@@ -22,6 +22,7 @@
 import pygeoif.geometry as geo
 import pytest
 
+import fastkml
 from fastkml.exceptions import GeometryError
 from fastkml.geometry import Coordinates
 from fastkml.geometry import InnerBoundaryIs
@@ -122,6 +123,22 @@ def test_read_inner_boundary_multiple_linestrings(self) -> None:
             ((1, 4), (2, 0), (0, 0), (1, 4)),
         )
 
+    def test_inner_boundary_repr_roundtrip(self) -> None:
+        """Test that repr(obj) can be eval'd back to obj."""
+        coords = ((1, 2), (2, 0), (0, 0), (1, 2))
+        inner_boundary = InnerBoundaryIs(
+            kml_geometry=LinearRing(kml_coordinates=Coordinates(coords=coords)),
+        )
+
+        assert inner_boundary == eval(  # noqa: S307
+            repr(inner_boundary),
+            {},
+            {
+                "fastkml": fastkml,
+                "LinearRing": geo.LinearRing,
+            },
+        )
+
 
 class TestBoundariesLxml(Lxml, TestBoundaries):
     pass
diff --git a/tests/geometries/point_test.py b/tests/geometries/point_test.py
index 888be317..32fb08df 100644
--- a/tests/geometries/point_test.py
+++ b/tests/geometries/point_test.py
@@ -196,6 +196,30 @@ def test_from_string_uppercase_altitude_mode_strict(self) -> None:
                 "</Point>",
             )
 
+    def test_from_string_invalid_altitude_mode_strict(self) -> None:
+        with pytest.raises(
+            KMLParseError,
+            match=r"^Error parsing '<",
+        ):
+            assert Point.from_string(
+                '<Point xmlns="http://www.opengis.net/kml/2.2">'
+                "<altitudeMode>INVALID</altitudeMode>"
+                "<coordinates>1.000000,2.000000</coordinates>"
+                "</Point>",
+            )
+
+    def test_from_string_invalid_altitude_mode_relaxed(self) -> None:
+        point = Point.from_string(
+            '<Point xmlns="http://www.opengis.net/kml/2.2">'
+            "<altitudeMode>invalid</altitudeMode>"
+            "<coordinates>1.000000,2.000000</coordinates>"
+            "</Point>",
+            strict=False,
+        )
+
+        assert point.geometry == geo.Point(1, 2)
+        assert not point.altitude_mode
+
     def test_from_string_3d(self) -> None:
         """Test the from_string method for a 3 dimensional point."""
         point = Point.from_string(
diff --git a/tests/gx_test.py b/tests/gx_test.py
index 33c6f8bc..8ad064d6 100644
--- a/tests/gx_test.py
+++ b/tests/gx_test.py
@@ -18,6 +18,7 @@
 import datetime
 
 import pygeoif.geometry as geo
+import pytest
 from dateutil.tz import tzoffset
 from dateutil.tz import tzutc
 
@@ -175,6 +176,48 @@ def test_track_from_track_items(self) -> None:
         assert "angles>" in track.to_string()
         assert ">0.0 0.0 0.0</" in track.to_string()
 
+    def test_track_from_whens_and_coords(self) -> None:
+        whens = [
+            KmlDateTime(
+                datetime.datetime(2023, 1, 1, 0, 0, 0, tzinfo=datetime.timezone.utc),
+            ),
+        ]
+        coords = [(1, 2)]
+
+        track = Track(
+            whens=whens,
+            coords=coords,
+        )
+
+        assert "when>" in track.to_string()
+        assert ">2023-01-01T00:00:00+00:00</" in track.to_string()
+        assert "coord>" in track.to_string()
+        assert ">1 2</" in track.to_string()
+        assert track.coords == ((1, 2),)
+
+    def test_track_from_whens_and_coords_and_track_items(self) -> None:
+        whens = [
+            KmlDateTime(
+                datetime.datetime(2023, 1, 1, 0, 0, 0, tzinfo=datetime.timezone.utc),
+            ),
+        ]
+        coords = [(1, 2)]
+        time1 = KmlDateTime(
+            datetime.datetime(2023, 1, 1, 0, 0, 0, tzinfo=datetime.timezone.utc),
+        )
+        angle = Angle()
+        track_items = [TrackItem(when=time1, coord=geo.Point(1, 2), angle=angle)]
+
+        with pytest.raises(
+            ValueError,
+            match="^Cannot specify both geometry and track_items$",
+        ):
+            Track(
+                whens=whens,
+                coords=coords,
+                track_items=track_items,
+            )
+
     def test_track_precision(self) -> None:
         track = Track(
             id="x",
@@ -335,6 +378,20 @@ def test_track_from_str_invalid_when(self) -> None:
 
         assert track.track_items == []
 
+    def test_track_from_str_invalid_coord(self) -> None:
+        doc = """
+            <gx:Track xmlns:gx="http://www.google.com/kml/ext/2.2"
+              xmlns:kml="http://www.opengis.net/kml/2.2">
+            <kml:when>2010-02-14T02:02:09Z</kml:when>
+            <gx:angles>45.54676 66.2342 77.0</gx:angles>
+            <gx:coord>XYZ 37.371915 156.000000</gx:coord>
+            </gx:Track>
+        """
+
+        track = Track.from_string(doc, strict=False)
+
+        assert track.track_items == []
+
 
 class TestMultiTrack(StdLibrary):
     """Test gx.MultiTrack."""