for more exp. grapplers

[monji112000]

1)Do you train with a cup? if so what type? I have recently been finding it very painful to wear a cup for a specific submission. (arm lock from the guard).

2) why stand up vrs hopping when braking someone's guard? Hopping seems allot faster, and I can't figure a reason why you would do it one foot at a time.

3) anyone have knee issues with shooting in for a takedown? I want to get a decent take down for training purposes but when i do practice the penetration step my knee's start acting up.

thoughts and suggestions from Dave or Dale (or anyone with real experience).