Been a while since checked the forum - loads of interesting comments. I suppose my question may not have been specific enough? In terms of “how strong do we need to be to run short line” I think a “correlation” rather than “causation” is what I’m thinking about. It’s not so much how strong do you need to be, but once you can run short line, how strong are you? That might then give the winter gym training some meaning.
Thinking about the best exercises to build muscle for a sport, “specificity” trumps everything. Meaning if you do the sport correctly then you will develop the best conditioning and strength for the sport in question. Could explain why Nate doesn’t look like a beast, if he is technically doing everything as close to ideal as possible, he will only be developing the muscle strength necessary to manage the loads he’s experiencing. The more muscular skiers are either in the gym, doing other sports or taking loads that are less than ideal.
Thinking this through seems to further support the idea for free-skiing.
Free-skiing, with the mindset for developing the correct rhythm and timing with the boat, may be the closest we can get to focusing on the best strength training for the sport.