I was out on the water last night, and after my rider fell, I went down to forward idle, waited for my wash to pass, turned around and accelerated back. When turning and accelerating, it sounded like the transmission slipped. I throttled back right away and tried again and it was fine. I checked the fluid level and it seemed to be up to the full mark. I couldn't smell anything burnt on the fluid, and it looked clean (from the dipstick anyways....I replaced the fluid early last year)
It hasn't happened since then. Could it have been the transmission slipping? Something else I'm not thinking of?