Re: do heavy weights really affect us?
"With poor technique any rod weight can take its toll on you. I would imagine that combining poor technique with heavier weight rods would simply speed things up." X2
I have a good friend, that by all accounts, is a good fly fisher. He really put the hurt to his casting elbow while casting on the salt for a week. Took him a long time to heal. When you go from predominately a 20' nymph roll cast to a salt double haul without preconditioning you're asking for it.
Think it holds true for any athletic endeavor.