If I was able to pop my average FT% from 75 to 80, that would basically average out to one more point per game, roughly projecting I shoot 20 FT's per contest. Very few of my games are decided by one point. Knowing that it would take a whole lot of training to get my team shooting 80% from the line, and that those same weeks would be much better spent training primary and secondary skills on my trainees, I believe I'm landing squarely on the side of the fence where I'm only going to train FT if my training minutes are seriously messed up in a week and I don't want to train stamina up any higher.
Looking at my team's FT%'s again, my three lowest FT shooters have ratings of Strong, Strong, and Prolific, whereas my three best FT shooters have ratings of Proficient, Proficient, and Prolific. That's a gap of about 25 percentage points with nearly the same ratings. Interesting.