Thanks for all your comments. I was wondering if this thing could handle a smaller two seater jet ski, like maybe one of those sparks, which I think run around the 700 something mark. I am very concerned to try it though. I see that marquipt is still in business so I will contact them to see if they have any details. There are a lot of variables here and I would hate to tear something up. As far as mounting, it is mounted on top of sort of a well casing that seems to go down through to the hull of the boat, so it goes through the roof, then through the decking, and then ends up in the bilge area somewhere, but I have not tracked that down yet. The unit sits on top of this casing, and then appears to be lagged to the roof, as I see no plates or anything on the bottom side of the roof. Well I guess I will go to marquipt first and then decide if I even want to attempt it from there. Thanks for all your thoughts.