I have a 18 foot aluminum Fisher, SV-18CC with a 1990 3cyl 90hp Mercury. It weighs about 700 lbs, the motor is about 280lbs. I have a 24v Minn Kota Riptide mounted on the front, 2 group 31s, mounted up front. Running a turning point Hustler 4 blade 13 by 19. Motor is maxed out 4900 rpm (too low), running at 33 mph.
When I trim up, it climbs to 36mph and RPMs go up to 5000 but then the boat begins to porpoise and I have to trim back down. I already have a bit of weight up front, I don't want to add more, I want to go faster but I don't want to porpoise...
Any suggestions?