hahahaha yeaaa i know exactly what you're talkin about with the knuckles. which is your dominant hand?? im right handed so when i do orbitals i spin counterclockwise(from my perspective), that way when i get the strings split i can more easily pull it together without hittin my knuckles. idk its kinda hard to explain, im ripped lol. pretty much the only knuckles id be hitting would be my left ones and since im goin counterclockwise, and being right handed, i have more control over that string, thus leaving my knuckles unscaved lol. if you're left handed.. try doin it clockwise. its a thought and it might help ya. same thing in air wraps.
you get what im tryin to say here? lol. if you do try it out n im more then sure youll see a difference.
