The two main tools I think you need to have to beat a chopper is patience and consistency. Choppers win from your mistakes most of the time. If you play out long points and wait for the right ball to put away you will normally win. I like to serve out to the backhand (the long pips or sometimes anti is normally on the backhand.) They will not usually attach with the pips so they will just push it back to the middle of the table. You need to attack this ball with location to a corner and make them move to get it back. If you loop this ball to the backhand they will normally chop it back. You can either push this ball back to get a less spiny ball, or loop another. I normally loop one, push one. The chopper will eventually put up a week chop that is too high or too dead. This is the ball you need to attack for the win. Once you attack this ball get ready for it to come back just in case. If he/she happens to return it just start the same pattern all over. Chances are if they return this ball it will be very weak and you can attack even better on this ball. Do not attack a ball you aren’t positive you will make. There is no reason to attack a ball and miss. The chopper is most likely not going to hit a ball by you. The last thing you need to do is remember not just to move the chopper left and right but also up and back. Choppers have trouble chopping from different lengths away from the table.
In conclusion, you need to be patient. Wait for the right ball to attack. Use the pattern loop one, push one. Finally, don’t forget to move the chopper in and out. Now you have the tools to beat a chopper.