This is a question regarding the Bat Jack. I was wondering if it is legal to use it during games. I've heard yes and no. The ones who say "yes" have told me all that is necessary to make it legal is to put a strip of tape over the velcro so that it has no chance of sliding on the bat. Others have said you cannot add anything to aid the grip (such as extra tape). So what is the rule (ASA/NSA in particular)?