I usually use a lukewarm kick serve for 2nd serves but it bounces just high enough for a good returner to really eat it up. If I put more heat on the serve it usually translates to a double fault. One of my partners has a floater with no pace and no spin for 2nd serve but it bounces low and it is difficult to punish. For my level (3.5 to 4.0) would it be better to use a floater for a 2nd serve instead of a kick serve that kicks just high enough to be attacked? Any ideas for a reliable 2nd serve that is hard to attack off of?