2. Pop his tire.
3. Break his car's rear by hitting its side at an angle.
4. Ram him hard from behind, or T-bone his passenger side, to snap the drive-line.
5. Make a hit at least every three minutes (failure to do so is called "sandbagging") and stay away from others backing toward you.
Says who? Ron Kots, veteran racer and derby car builder, competing at the State Fair in a '63 Plymouth Fury (#67).