I've been thinking the best way to experiment with FS pulling motion is actually on a surf-board. And surfing.
If you have an inefficient pull you won't catch waves.
The surf board provides a frame of reference to view your pull mechanics.
The board also puts you on a chest down, swimmer's posture. Forces your back and arms to work (like a golf swing machine)
I've been out in Tofino, twice a week doing 2 hour sessions. The fastest acceleration is from hand tipped in, high elbow for sure.
I watch other surfers with dropped elbows and holy, all that arm turn-over but going nowhere.
Couple of weeks ago we went out with some v/good swimmers from a swim club near us. 10+ footers and they munched through that stuff like nothing. Great surfers!
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