In regards of how to deploy a chute, it depends on the car, when I drove my brothers (Pantera Kid) 1971 Pantera at 210 mph for a record, I had to drive into the chute so the car wouldn't spin out, but with my 1963 Avanti at 216 mph I can get off the power and then deploy the chute with no problems, I perfer this method best because
it doen't put a load on your connecting rods when the chute load hits the engine!!! Dave