It really wasn’t all that hard, the rocket is small and easy to defend, once an alliance has committed to scoring on one to try and get the RP, parking a robot in front of it and getting in the way of any scoring robots makes getting the RP practically impossible. You really don’t have enough time to switch to another rocket once you have started scoring on one. If the offense bot tries to switch to the cargo you are feet away from hitting them while they try and score on that side of the cargo ship.
Because of how small the rocket is, it is easy to grab the corner of robots and push them away from the face of the rocket. It’s very different than 2017 where the size of the airship and the flaps between the scoring stations really helped, and limited defence.
I look forward to creative mechanisms and strategies to deal with defence, if anyone has secret methods please share