Trim down to get on plane the. Start trimming up. At least neutral with the hull bottom. Then go to positive trim for speed increase. Now I’m really confused on how plugs made the boat faster. We’re the RPMs the same? Plugs/tuneup usually come into play when the boat isn’t running right. Speed is a simple product of RPM, drive ratio, pitch, and slip. So if you had the same rpm and all else being equal something seems very odd.

Step hulls don’t work like that with trimming. Plugs can get you better acceleration, fuel economy and speed. I had a similar problem with a jet ski I use to own and the spark plugs made a massive difference. Didn’t pay attention to RPM but I could also feel the difference in speed.

I have a stepped hull and they do work like that. Lol. But good luck.

Have yet to see a boat that goes faster the more the bow is buried. And I have a straight bottom and a step.

I really haven’t had much time to mess with the boat but hopefully tomorrow I’m gonna mark the prop and check to see if I get any spinning. Switching the battery to the starboard side as well for listing to port issue. I’ll mess with the trim more but it seems pointless like it doesn’t effect the boat at all.

Well I got about 59mph at 4500RPM today on slightly choppy waters, 1/2 a tank and a total of 4 people onboard. Gained about 5mph trimming up a little bit, it’s a bit weird trimming this boat because you can’t feel when you hit the sweet spot on the trim. Just watched the speed when I was trimming and it didn’t take much trimming.

what propeller you running now?