You can.t have too many warnings about flying debris! I had to undergo eye surgery to remove a piece of steel from my cornea acquired in a industrial setting with safety glasses, gogeles, and a face shield on. The best way is no impact at all. Take the cotter pins out and have a socket and breaker bar.  Put it on the passnger side twards the front with the handle on the ground. Start the engine and slip the clutch in first gear. It will come off. Alternatively cut the nut off it is false economy to reuse it as the threads are most likely distorted.Mike