Long time reader first time writer.....
I have a 21' shallow V (with small pad) skiboat 350MAG MPI and Bravo 1 drive. Like every other person I'm looking for more speed.......currently the boat runs a 23" LaserII @ 4800 - 4900 RPM to 66MPH GPS (23" Revolution 4 @ 4600 - 4700 RPM to 65MPH GPS), engine is stock and exhaust exits thru prop.
My initial question is this, currently the prop shaft runs almost 8" below the pad and I was interested to hear any opinion on what effect an IMCO 3" shorter lower would have ?, and what performance increase if any I could expect ?, the only requirement for the boat is to be able to pull a slalom (single ski) skier out of the water the rest can be top end speed.
I realise that raising the "X" has very different effects on very different hulls but the performance sterndrive industry is almost non exsistant in my part of the world so any help would be much appreciated.
Regards
CC