I had A multiple speed transmission in my boat and I will never have another boat without one. The new boat we are building will have a 3 speed transmission. Jassman, we want to be the first boat manufacture to put 3 speeds in all our boats so I do not want to disclose who is building ours yet. I would be willing to bet that in the next few years every high performance boat will have multiple speed trans.
on another note, the trans I had in my boat never broke or had any problems but the gear ratio could have used some work, and being that we had my trans all custom designed and built I would not advise someone just trying a normal trans.
when I get back from pickwick I will add to this with some insite from real world testing