If you don't always rotate at 3 degrees per second, how are you gonna do it when you absolutely need it?. .. .With the advent of reduced power takeoff every takeoff is the equivelent of a max weight performance limited takeoff so should you chuck an engine you will NEED that 35 feet.. .. .Delaying rotation is an enourmous hit.. .. .Just do it right, not half assed. .. .Cheers. .Wino