That was funny big heavy...a nice garnish
I tore my right ACL and got a custom knee 'brace'...and I did wear if for ~2 years. My knee doc told me it was a mind thing...that the strengthening of my muscles around the knee (as well as legs...he said the secret to good knees is strong legs) were good enough support for them (and he is a wakeboarder). I'm now over the fear of hurting the knee again, and therefore don't need the brace, all it does is act like a crutch...use it if you must, but it's not the solution to your knee problems...just a temporary fix. As far as exercises for your knees, what worked for me was doing squats with 50 lbs on an Indo board.