I have trim tabs on my nordic and a ride plate if I adjust the tabs to much up the boat will porpoise with the diverter at any angle except straight at 4k and a little porpoising at wfo, and if there adjusted down the boat rides wet and I can fill it slow down and kinda bog. Now if there simi flat with he haul it ride smooth but fills like it is still being held back but I can trim the diverter up and down and is smooth. I just took the tabs and braket off and I'm going to try them with this weekend to see if having the brakets off will help and play with the ride plate. The braket dose hang a little under the boat. Just wondering if anyone has had any luck installing a ride plate to be able to remove the trim tabs.
This is pretty common.
The long and the short of it is this.
Trim tabs are for slower speed hull attitude adjustment from a good cruising speed up to near top speed.
Ride plate is for pump attitude and attack angle and really, ultimately designed for the hull to "rock back" onto. Making the keel line longer, the helps offset the hole the pump digs.
The two will fight each other to a point, but I'm guessing the tabs were added because of what you describe.
The plate should be adjusted about 3° up on most hulls, this is not to say you need 3°, it just means that's a good starting point.
I'm paraphrasing of course, flusher will be along shortly to make me sound like a special ed. candidate.
GT
