Hi,
I have a 1997 Jet Sport, it is a little smaller than the Sport Deck, it isn't too bad, but I use it mainly to get all my gear to a nearby beach or cove, beach it, then play on the ski. I get a lot of looks, and so far a very cool reaction, people seem to have heard of them, but never really seen them in person before. It is a great idea, but in real life, I think a regular boat does a much better job at being a boat, at best it is a compromise. But a least the Seadoo is all Seadoo when separated. I have a 2006 RXP. I was able to do about 30 on fairly choppy water, I imagine it would do a little faster on smooth water.
Henry