The other day I saw an early 1980"s IO, it was a go fast boat with a small cuddy cabin. The hull had pontoon like extensions sticking out past the outdrive approx. 20in. In these extensions were two steps molded into the fiberglass with a swim ladder on them. I have a 17' dixie cc, that I am still considering a hull extension on. I am thinking that these extensions would give my boat added flotation when boarding after scuba, and help it plane faster. My boat has an outboard. Any comments or info would be helpful. Thanks