he does have to fish pole or put any strenuous amounts of torque into the bar
Not sure what you mean with this. Can you maybe explain?
I have quiet some pressure on the bar, which is good to feel where the kite is.
I used to have problems with my elbows...had tennis AND golfer arm...my brother, an orthopedic, gave me few injections...and since then no more problems.
I do stretch a bit for those muscles before every session.
A friend of mine says, the more you stretch, the less problems you will have.
So try to do it a lot and it should get better.