Serving - Throwing The Ball with spin

Hi there,

I would like to ask if there is any advantage in spinning the ball while tossing it to serve. I would still have a flat hand, and let it roll off my hand after getting enough momentum to throw it high. This gets a little backspin on the ball when I'm throwing it, but I'm uncertain if it makes a difference. Is there any rule against this type of toss? Or is it even effective at all? Thanks. 

Hi Howard,

Unfortunately for you this is not legal.  

This is covered in the serving rule.  Here is an extract where it is mentioned.Hope it helps.

The server shall then project the ball near vertically upwards, without imparting spin, so that it rises at least 16cm after leaving the palm of the free hand and then falls without touching anything before being struck.