Got one of those running around here on the Susquehanna River with a 350 and thru hull that is low and only exposed when it's on plane... But that's the funny part. How often do you see a pontoon truly "on plane"? I kinda laugh every time I see it, but only because it's kinda strange, not because it isn't cool. I had considered building a flat bottom third pontoon with an I/O V8 to bolt under the center of mine, but the only downfall is you can't go in as shallow, and our sandbar is a gradual incline, and I like being in pretty far in the shallow water.