Re: Casting mechanics standing vs. seated?
I haven't fished from my tube in about three years, sadly, but when I did, I definitely used more of my arm when I cast. Standing on the bank, I did a much better job of keeping my elbow tucked in and just using my forearm, but from the tube I tended to pick my whole arm up, just to get the extra height off the water.
I imagine that if I were a really good caster, I shouldn't have to change anything from one scenario to the other. But I'm not.