Yes. But I don’t think free skiing and course skiing can be compared/interchanged. It’s not apples to apples. When I go free skiing I am cutting fairly aggressive and can bust out 60-80 cuts before I get fatigued mainly in the forearms and lower back. When I ski in the course we spin at each end so you get about a 25 second rest while turning around but after only 4 times through, only 24 buoys,the fatigue starts to set in. If I try a 5th pass it is sloppy, the form isn’t there l, and it is just asking to get a pulled muscle/bad fall/or just plain getting hurt. Learning to free ski is a thing also. Find a nice rhythm, don’t get slack in the rope and go enjoy the ride. If you ski enough there is absolutely no reason for the gym.