It's probably better to use something other than just the body slams as a first attack. If you play in a tournament, eventually your opponents will get wise and block it first thing. One stratagy I use a lot is to always use df 3,3,3,3,3 when they're on the ground after knocking them down. It does a decent amount of damage. I also use d 3+4 after using a body slam or whenever the opponent is far away.