Ok... in the vein of Cindy's FF thread- I'll talk about the rule that I think needs to be changed in rec tennis. We all know that you aren't allowed to hit the ball before it crosses the net, and if you do violate this rule you must call yourself for the infraction. The problem with the rule is that we have all played against MANY people who routinely violate the rule, but because they never call it on themselves there is no recourse. Whether they don't realize they are crossing the net or they are just willfully ignoring the rule they get a big advantage because of this. When your only recourse is to ask "are you sure you didn't cross the net?" and they say Yes then its done. This has the effect where the rule is only enforced against the people who are truly trying to follow the rule while for the other subset of players they are just able to continually hit the ball however they like and it leads to a competitive imbalance. To me this is a rule that can be enforced when there is a chair umpire but in rec matches it should not be called at all. Yes this would lead to people putting their whole arm across the net to hit the ball, but once someone is playing that tight to the net they are opening themselves up to lobs anyway which hopefully would reduce the effectiveness of this. But the real goal is to make it so that all players are affected by the rules equally, and not to give benefit to the people who are most willing to put up with angry glares from the other team when there is a questionable call.