Smashing with (slight) topspin

I find it a bit easier to use a slight topspin stroke when smashing a high ball from my forehand side, probably because I have used that stroke on many occasions or perhaps because I do not position my feet correctly to use the flat stroke, standing fairly square on in relation to the ball.

Is there a particular advantage of using the flat stroke?

Hi Lukasz,

The main advantage to hitting the ball flat is that the ball travels faster.  If you put a bit of topspin on the ball the ball will be a bit slower but the stroke will probably be a bit safer.