If you can get the skin cleaned and degreased, it'll work for a backing. The gar will look awesome. I can see it being difficult to work, but definitely doable.
I'm planning on using my ball python sheds myself to add a little texture to the bow. Those little buggers are starting to get a little size to them now. I wish my Sumatran short tail was larger so I could use her shed, but she's a little small. Think of how these noodles will look on a bow. Not sure if I could do it when they pass on, but it would look awesome. Here's the group, though the Sumatran will be more like a suasage than a noodle when she's an adult, short and thick, 3-4' long but 4-6" wide. She's the Orange head, dark body with a busy pattern.
Sorry if I freaked out anyone with the pics. Can't pass up an opportunity to show them off a little.
Kyle