i maxed out my squat yesterday (hit 335, failed 350 -- but overall a 100+ lb improvement from the start of the summer!) and today my right knee is feeling a bit out of whack. is it time to start wearing knee wraps? what exactly are knee wraps good for? and if i should get them, what kind of wraps are good and competition legal?

also another slightly humerous note, i missed the peg when i was re-racking a 300lb warmup lift i didn't drop the weight, but came damn close