Verified answer

Float serves can be very good, but their usefulness kind of drops off at the highest levels. Most good players who can get their hands on a float serve can pass it very accurately.

The jump float serve is good for forcing players to pass it underhand, but it is still not that effective at the highest levels.

Jump topspin serves and jump spin serves however can be hit at like 70mph. Even if topspin makes it easy to pass, you still need to get to the ball to make the pass. A fast jump-serve on the back line, side line, or in a seam between two players is almost impossible to get.

The women's teams use more floaters than the men's teams too. So if you were just watching men's vb that might explain why you didn't see too many floaters. A couple of the women on our national team have nasty float serves.

Those high level players like to use the deep floaters where the server stands 10-15ft behind the service line, but club and high school players can't always do that. If you go to nationals you will see that they often have only like 6ft of room off the back of the court. So that makes floaters somewhat less effective.

even though floaters fall faster than topspin balls, floaters, in most cases, are easier to pass than most topspin serves.

My coach tell me..

float serve is very easy for catch, it doesnt spin or change direction.

althought its hard, is still easy.

So my coach didn't let me perform any float serve in game.

Hehe.. That my Experience.. May it help..