that would be the rush part . Probably have to take it easy and kill the motor to slow down . May have to wear some cramp-ons and drop your feet . Didn't plan on going flat out on a small pond , just move around calmly on a oval track . When I was a teen my brother and I put a Briggs & Stratton on a Simplex frame direct drive ,no brakes and had a blast. It would work up to about 30mph . We did heal faster 40 years ago I will admit .