how do you measure harness line length? do you just measure from one end to the other, or just the length under the boom? And while we're at it, how come all the gurus say you should be able to put your elbow in the loop and your wrist should reach the boom. My lines are 22 or 24 inches (not sure about measuring the inch that goes over the boom), and this equates to about half the length of my forearm. I always have the boom right at the very top of the cut=out too - must just have bloody long legs?!