Bass Boat Porpoising

[basn4life]

I have a 1989 Bass Tracker 1600tf fiberglass bass boat 16' with a 100hp Merc. It has a hydrofoil installed on the motor. I didn't like the look of it, so I took it off. The boat porpoised bad, even with the motor trimmed all the way down. With it installed, hole shot is great, and it rides nice, but as I trim it up to gain speed at wot, it starts to porpoise. Trim tabs will be in the way of my hold down straps when trailering, so I cannot use those. I the cavitation plate is mounted 2" above the bottom of the hull "v". I have moved the trolling motor batteries up front in the bow to help balance weight and that did not help.

Will a jack plate (5-6" set back) prevent porpoising?

Thanks

 

[cadunkle]

Re: Bass Boat Porpoising

Just a tip, use proper grammar and sentence structure. After attempting to understand 2-3 sentences of your post I wanted to gouge my eyes out and gave up. Good luck fixing your porpoising. Better weight distribution helps (more in front), and trimming drive lower. Also propellors can affect it too. I have no experience with whale tails though.

 

[basn4life]

Re: Bass Boat Porpoising

I Can See That, I edited it now to get to the point.

 

[26aftcab454]

Re: Bass Boat Porpoising

your motor may be set too high.
My LoneStar has a 115 hp(overpowerd by 25hp) and is mounted 1" high mounted on a 18" transom bracket .
it has a hell of a hole shot / top speed but i can only trim it up 50-60% before it starts to cavitate.
i dont like whale tails and have never tried one.
you may have to comprimise.

 

[tashasdaddy]

Re: Bass Boat Porpoising

put smart tabs on it, and get rid of the foil. porpoiseing is usually cause by load balance, and trim, too far out.