If you were to measure your arm pull strength during the swim, could you equate the amount of effort to any particular weight range if you were doing pull-downs on a weightlifting machine?
I find that I can either do deep hard pulls (arm doesn't bend very much) -or- do shallower (hand doesn't go as deep downward and I bend my arm more) but quicker pulls. I can stay at the same speed in both ways. The first way gives me a slower turnover but requires more effort while the second gives me faster turnover but catches less water. Which do you favor?