I'm getting quite a bit of porpusing at most speeds.It rides good between 38-44mph trim no more than 2-3 on the indicators and 60-70mph with trim as high as about 9 where i start loosing speed.Anywhere between i can run 1 or less on trim and when full fuel i'm running the tabs.Boats a '92 Top Gun HP500, TRS, 26pitch 4 blade turning out.I also boat on the Illinois river which is usually flat as glass which im sure doesnt help.Looking for advice since i havent had the boat long and quite a bit different from my previous 29 PowerQuest.

It needs some waves so it can stretch its legs.............

I agree with that!

get the boat out on lake mi and the porpoise will be gone. definetly not a river boat.

TRS guns are usually balanced real well. The TRS guns I run with don't have any popoise issues and they both run 26 pitch bravo 1 props turning out.

Drives spinning out IS stern lifting, the gun has a notched transom and thats one reason why they do that from what I am told, my buddy went from a mistress to a gun and said they are totally different like that...

I also hear 42's do it too...

running tab is probably only way to help it, or keep drives in a tad during cruising, I rarely use my tabs.. but the mistress rides more level even though it too will porpoise way more then my 32 Baja did..

put blowers on it and drive through the 60-70mph hop

Just tuck it in a little bit, I've driven your boat (exact boat) many times. We did the valve job and put the GPS and headliner in it

My 94 porpus' in flat water also....tabs(280K's) between 2-3 and its gone.

Hahahaha!