U go over to the entrance to the little swamp pool with alligators and stop on the wooden bridge part. look on the right side and try to jump over it. then swim over to the part of tortuga behind the house and go behind the side roof then try to jump up. u will mysteruislly jump higher and ur there! if u wanted to do the rock wall thing then stay at that place behind the weapon shop. go to the closest part of the thing without falling. then flip a coin or dance in a jig and wait for like five seconds. then walk forward and u will magiclly be floating! walk backwards to go up and forward to go down. (i recommend walking in circles when doing that) after ur the right hight walk over to the rock wall (u cant see it while ur behind it) and turn the camera at urself. u'll be standing on the rock wall!!!!