How much of a wake should I expect from my waverunner? I have a 99' Yamaha GP1200. It has less than 40 hrs on it and runs tip top. However I feel bad idling through the marina because of the wake it kicks up. Granted because of its size the wake is not enough to unsettle any boats. I just bought it last year from a lady who rarely ever used it. It has a digital tach, which seems to fluctuate around 1,000 rpm or so. Hard to tell exactly because it seems to bounce up and down quite a bit.