I can't think of anyone on here who uses one, to be honest. I wouldn't trust an inflatable on the open water. I figure, if I punture a hole in it, it's going to the bottom. It offers very little protection from any seals or sealions... or sharks.
I don't even want to know what would happen if I dropped my gaff into the side on accident.
Do you have any pictures of your truck? I'm sure we could collectively come up with something that would work.
Oh, and welcome!