I don't run WOT pulling a moldboard plow. Only what it needs to pull it. PTO driven stuff... yes, WOT. When this question gets asked, i always ask, do you drive a car with your foot all the way down on the throttle? No, you just use as much as is needed. Tractor is no different. But, PTO driven equipment was designed to run a certain speed, so it requires that speed.
