Detecting side spin

How can I better detect side spin and react in time?

I try to see if my opponent's bat moves to my right or left, then counteract by moving my bat toward the same side when striking to ball. This isn't working well for me.

Any suggestions? 

Thanks, Kevin.

In my 70s and just started playing again after many years. I'm also left handed and appreciate that Alois plays lefty in many videos. 

Hi Kevin,

This can take a little getting used to.  There are variations in the amount of spin as well.  Stay with your principles and keep trying to return the ball as close to the middle of the table as you can.  Only with many many returns will you get the feel for the subtlety.  However you are constantly improving with each time you make an attempt.  Make sure you watch where the ball is going, even or especially when you miss the table.  This will give you good information for the next time...