Zteven

What range of temps do you see during normal operation? I changed the 160* thermostat on my 5.7 as part of regular maintenance and I am now seeing anywhere from 155* to 165* at around 4,000RPM. I feel like the old thermostat had a lot less range - say 158* to 162*.

My best results have been with both factory hard tanks full, 750 in rear surf side locker, and a 400 on the seat directly in front of the rear locker. That being said, I usually ride with a driver and spotter only. If you've got a larger crew, use them instead of bags on the seats. Play with speed and trim tab placement to get the best push / wavelength from there. For me, speed is usually 10.5 to 11.5 with trim tab 50% to 75% down depending on water depth. Too much weight forward looses all wave height. This year I am going to try another 400 on the observers seat in addition to the above and see what that does. The rider below is 5-11 on an O'Brien Soft Wakesurfer in about 15' water depth.