I agree with FFS don't use them. Back to your question. On a slapper doing that I use the Whip Hit. Be very careful and wear a helmet. Many young slappers do that and tI use the whiphit for many different things to teach a kid what we want to fix. I actually warm up my slappers( older players) soft tossing with the whip hit. My dd can hit it just like a normal bat.