I know of two others that are having their boats re-built.

Aluminum bass boat porpoising. Porpoising generally is caused by too much weight in the rear 90 degree flat transom on a flat bottom boat or the boat has a hook in the bottom near the back. This boat has perfect aluminum and no electrolysis and a great running 1988 Yamaha that replaced the prior 25 HP Evinrude that we wore out on. Crestliner boats are wildly popular in the freshwater world.

Combined with these boats signature look the low base price of the material makes these boats a popular choice. They are unique in that they have a welded aluminum hull as opposed to rivets. Or there is a hook in the hull or a built in hull speed which over 20 MPH it will push the bow down.

Can you move some weight further forward. This cause the classic pitch up seen in most planing hulls. Although most will rig the Triton X18Ranger RT188 with a 115 hp Etec some may choose a more economical 3 cylinder 90 hp Etec.

The bow panel includes a trim switch a 12V power outlet and flush mount graph space up to 7 so youve got everything you need to win the day. Just turned in my 2017 PT18. Porpoising happens when the center of lift moves aft of the CG.

Thanks for the info. Aluminum Bass Boat front jumping up and down on water If I understand your boat is porpoising with the motor all the way down. You can check the bottom of the boat with a Straight.

Picture a porpoise leaping through the water and you get the image of what its like in a powerboat. This boat was run in the flats probably 100 times more that this G3 has ever been on the flats as we purchased this boat approximately 18 years ago and used it exclusively in the flats until the purchase of the G3 boat which we considered a real upgrade. As with all brands they have had their issues over the years but Crestliner has responded by improving their designs and practices when problems arise.