Re: porpoising real bad need help
 

"Level it" ?? Why? You may want to read this topic in another boating forum. You may have the same symptom if there is no explanation for the imbalance.
http://www.thehulltruth.com/boating-...l#post10546710

I should mention again, that I have the stainless versions and those have more adjustment capability (if you fix the design issues;-).

Re: porpoising real bad need help
 

Sorry dude, I've not made my point clear. What I was talking about, unstable, is only while underway. When I do get underway, I ask all my passengers to please stay in their seat ! The constant trim tab adjustments drive me crazy cause, I guess I'm Marine OCD. I want my boat perfectly level, side to side, while on plane ! (MOCD)
BTW, my boat sits level while at rest.
The best scenario I can come up with, to better explain what I'm TRYING to say about using trim tabs to the job of the engine trim.......
Let's pretend you're cruising along and you run the port trim down to level the boat. You accidently run it down too far and now it's listing to starboard. Instead of raising the port tab, you run the starboard tab down to over come your too deep port setting. BUT, you run the starboard tab down too far and now you're listing BACK to port. SO, you run the port down even more.......You get point, right? The fix would have been to lift the port tab a little, in the first place.
SO, your boat is porpoising and porpoising is from TOO MUCH UP TRIM. Lower your trim enough to stop the gallop.

There's several times I look back at something that I opined on and wish I'd kept my opinioned mouth shut. This is one of those times !!
Good day boys !:D