With the outboard and what motor and setup do you have?
1648 lowe with 1100cc kawasaki inboard jet ski motor and pump 110 hp at the pump. Got 52 mph gpsd, 47 mph loaded with genny 4 batteries and two guys. Just bored it out, ported and polished exhaust ports havent got to run it out yet with the rebuild still breaking in but it feels a lil more powerfull.