larger than the small adjustments you're making to the steering wheel. if you turn the wheel too far, the towed vehicle will make too sharp a turn.
your spotter can help guide you. always pay careful attention to your mirrors. most importantly, take it easy. a slow and steady approach will help prevent accidents or damage to either vehicle.
it's much easier to back up a towed vehicle in a straight line than it is to turn while backing up. if it's at all possible, you should position your vehicle so that you can back up without turning. this will make the maneuver much less stressful on you and your vehicles. but 