Re: Bending My Wrist
There's lots of reasons not to bend your wrist, but in some situations, I don't think it causes any problems.
Here's the reasons why you shouldn't:
Your arm is stronger than your wrist.
Wrist bending often contributes to wide, inefficient loops.
Wrist bending often contributes to tailing loops.
Wrist bending often contributes to less casting accuracy than a firm wrist.
Wrist bending can accelerate the progression into carpal tunnel syndrome.
However, when making short casts with a light rod, you're not likely to do any harm to your wrist or your cast by bending your wrist. I recently fished a one fly tourney on a smallish river and probably did almost all of the 400+ casts of that day with only my wrist. I also didn't cast more than 15' of fly line all day, however.
That being said I must emphatically emphasize that one is much better off to emulate the casting style of Lefty Kreh than that of Tom Skerritt's character in "A River Runs Though It"