These sponsons are great. Installed mine with 5200. Had to add one small #1 stainless Phillips screw to each end of the sponson to keep the tips down to the hull. Here are some crappy ass iPhone pics.
Tom took a great product and made it even better. I think this method of attaching them works much faster and easier than screwing and glassing them on. It also allows for removal down the road if you need to swap hulls.