[peterb]

Ken,

Thanks. As you probably know I have twin 200 Yamaha 0X66's on a 23 footer & full flotaiton bracket. Also, I have 12" x 12" Bennett tabs, each with two actuators. The boat came with SWS SS 21" pitch x 14 and 7/8 diameter props. At the sea trial the surveyor told me to move up the engines 1 to 2 notches, plus consider going to 19" pitch props.

The ride was not too good in the beginning. I pulled the boat out of the water and verified that the tabs were not working. I fixed them (low voltage on the fuse block). Also, I went to a 19" pitch x 15.25 diameter prop.

These two things made a big difference. The ride got a lot better. The only negative is that while the RPM's went up (from 5200 to 5400) the WOT went down from about 52 MPH to 50 MPH. Also, gas consumption got a little worse.

next thing I got greedy and raised the engines two notches. Seems to be at least one notch two much as I am spinning up water when i am on plane. I am going to throw on the old props and do a couple of other things before I move the engines back down either one or two notches.

Right now my cavitaiton plates are about 1.5 inches above the bottom of the hull (as they line up to the hull & not to the bottom of the keel). I thought that this would be fine as they are two feet behind the hull.

Just looking for answers & help.

Thanks

Peter