sounds like a relatively easy salvage given that the vessel is on the smaller side.
My vote would be to jet around the thing to break the suction, and ideally run straps under the vessel. Dont affix bags to any hardware along the rails cause there is no telling how strong they are. I'd probably run a 1000lb pillow bag at each corner of the stern, and one at the bow. THat should be more than adequate. Fill them from a LP compressor left at the surface and your good to go. Once its at the surface in clean water, you can inspect the hull. If it looks to be intact, you might be able to pump it out and get her afloat to run up on a trailer. If she's a mangled mess...better off left on the bottom anyway!
better yet...I need a vacation. any frequent flyer miles to share? I'll come bring her up!
