There are a few boats I have seen down here with stainless bottoms. Usually they were built to run down south by Kendall and Homested areas where there is a lot of coral rock running, it is the only way to keep the hull intact. Usually it is only a sheet of stainless riveted on the bottom of an aluminum hull and coming up the sides about 2-3 inches, I have not seen a boat with the hull made out of it. Most of the ones I see are built by Cloninger airboats, but I saw one about a month ago that was an old Thurman with a 180, seemed to run the island pretty well too. Almost all of the stainless wrapped boats that I have sen are about 9 1/2 to 10 1/2 ft. long and are running a rear deck over with a little wrap around on the nose. They are usually a very light built 4 cylinder with high seats set up for hunting and running in tall grass.
Larry