OK fellas I'm stumped.

I have a 1650 gatortrax w/ huntdeck and a 36 PD. Both are set to tall transom. I did this so I could swap to a outboard later if I wanted to.

Here is my question
My PD is stock my prop is stock.
When I'm running deep I can get about 22-23 mph with two men and dog 24 - 25 shallow. But I'm only getting 3800 rpm's on motor if I trim up or down I loose speed. If I trim up to get aroun 4100 rpm's I've lost 2-3 miles an hour.

What do you think I need to do? I talked to KP about this a few times and he didn't really have any suggestions. I know that the govner is set for 4200 and I can get up there in neutral but not with the prop in water.

My prop is 12.2 if I'm not mistaken and I don't have any hooks in the boat. Usually I wouldn't be concerned but I was riding this weekend and a gatortrax with similar layout load was running 27 plus.

I'm not a speed demon but want to get the most out of my rig.

Any suggestions on where to start?

I do know that when I put my motor in reverse at a certain trim angle that I can hit the bottom edge of transom. I'm curious if my transom is to high for the motor. When I say certain angle I mean if I don't trim up after running forward for a while I'll hit the boat.

Thanks for any suggestions in advance.

You could try a lil smaller prop. Maybe one of the 2 or 3 blades for the 32. How many gun boxes or how much crap did you have added to the boat?

Check your valve lash and do a leak down test. Stock valves are notorious for leaking and you can loose a considerable amount of power if they are leaking bad.