To add to Metalnut's solid points, I think the #1 slow left & right circles is more than quick and dirty, but rather an important final check after setting toe/camber/ride height. Repeat it occasionally to help detect damage/tweaks. Most all cars other than pan cars have some left/right steering imbalance in the linkage.

#2 & 3, on many cars you can lift the front of the RC, and then the back, from the center of the shock tower with a small driver or knife. Make sure each end has level ride height. Want to avoid any diagonal tweak, or what many ovals guys call wedge.

And general maintenance. Something like a bad hub bearing on one side can cause weird steering for example.