This is an update to my first post. I ran the 4-blade prop with the motor adjusted so high it lost water pressure the instant I touched the trim, and also ran it as far as 2 inches below the pad and all positions in between. (center of prop shaft). The problem I have is the most I can trim in up is about 2 notches on the trim gauge, less than half way, and not much more than half throttle before it gets silly wild. I estimate the speed before all this starts happening is around 55-60mph. I have lots of throttle and trim left, but there is no way to stay in the boat to get close to the speed this boat will go. Yes, I can flick the steering wheel when it first starts coming off pad, but as soon as you give it a bit more gas or trim it just gets worse. There is no way an experienced driver can overcome this issue...it is just to severe!
All the testing was done with just myself in the boat, full fishing gear, passenger gas tank completely full, and equipment reasonably position in the boat to help level it out. I have owned several high performance bass boats and this is by far the worst performing one I have ever had.
What am I doing wrong? Is this a common problem with these boats? Any suggestions on what to do to correct it?