I find this very effective, and slight risky if you do it stupidly, but when your edge hogging and you tilt right(if the ledge if facing right) or vise versa for a ledge on the left , jumpp with y or x and quickly do a b-air, so sheik does her back kick, then up +b so when she dives she grabs the ledge. I find it really helpful for edge guarding. Do other people do this to?