Robot is fit as.

I build a lot of 2wd pushers and grind the blades to a point each match. Put your front wedge scraping the ground with weight on it to get under opponents and leave clearance at the back of the robot. A quick back/fwd jiggle on the drive stick will give the front the mm or so it needs to ride up if you get stuck. Failing that you can reverse off a damaged arena tile and fight elsewhere that the floor is undamaged.

Most robots literally run planing the surface off the arena floor.

It is a myth that you need to pick someone up to push them. You just need to shunt them up a couple of mm to take the weight from their drive wheels and you can then push them around till your hearts content.