A three day event featuring mostly hydroplanes, ranging from 1 liters (small hydroplanes with a modified jet ski engine), to GP Light, to Grand Prix hydroplanes (with a Chevrolet 350 engine). The star was the big boys, the H1 hydroplanes with a jet engine that can approach 200 MPH in the straights, and average 155+ MPH a lap. They sound somewhat like a hair dryer or vacuum cleaner.