Selecting Whitespace in a Custom Shape

I have a few custom shapes that I drew with paths. These shapes are contained in a NodePanel. There's lots of whitespace/transparency inside of the bounds of the shape. Is there a way to make everything within the selection adornment draggable? My users are having lots of difficulty selecting these nodes because they have to click exactly on a line to make a selection. Thanks.

Just make sure the Shape.Fill is set to a Brush. If you do not want them to be colored, use “Transparent”.