measure mounting point to mounting point on the trim cylinder... so measure the yellow line distance,, Trim up untill that distance is 21.75" and note.mark your indicator, You will be fine trimming the boat to that point while running.

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Got it, thanks!

My '02 Performance Report says....

WOT 5300
MPH: 95
Drives: 5
Tabs: 2.5

As previously mentioned, contact Fountain for your report.

In my 29', 4.5, after that it starts to fall off.

GPS says 3.5

On the performance report for my 27 the trim was at 5.8 for max speed, I have also found right around there to be the best for top speed. It also would depend on the year, a higher x dimension would require less trim.

Called fountain today. Their on vacation till Monday. I'll try to get a performance sheet then. It's a 97 single step 35 with fresh full rebuilds. Not sure of the x dimensions on it. Never gone more than 5 before on my other boats so I didn't want to push. I was surprised by what I picked up from 4-5 which is why I started this. My intent is to get sheets and measure when it doesn't rain all day. Again I appreciate all the input!!

I had perfect conditions today and played around for a while. My x is 19, 5 on the drive and 2 on the tab 5200 rpm.

I'll have to give it a try hopefully soon. I'm on to bigger and way worse problems after a short run today!lol

Reggie Fountain once told me max. trim is 5 1/2 running top end , my 1990 smooth bottom runs best right at 5 to 5 1/2, above that is starts getting loose on the water and doesn't help any for speed.