Originally Posted by billy boats

I'm dealing with a similar issue with my 35 sonic. I raised my drives and not gettin the speed I expected. Had BbLades lab 30 bravos for me with a lot if bow lift . They didn't help at all. I used a 1" spacer and it helped the prop slip but didn't help the bow lift . I think the problem is in the bottom of the boat. These older boats have bottoms that came out of the mold a bit wavy and then add all the years of sitting on trailers and boat lifts made them worse. At 60 mph my boat rides good, at 70 it runs a bit flat, at 80 mph the bow is low, at 85 plus it's a scarey ride with the bow plowing and bow steering . After 70mph the boat doesn't react to trim at all. It just raises rpm do to prop slip from over trimming . I tried turning the props in . I picked up 3-4 mph but then the boat felt loose and still bow steering . That makes a scarey ride at 90mph.