I don't have the Aermodeller issue at hand, the one with Don Still and two Stukas on the cover, but it relates that during demonstration flights he repeatedly did wingovers to wheels on the tarmac and go around half a lap, then another wingover.
I once scraped the outside rudder on my Agile Arrow on the bottom of an outside square, with no other damage. I did not do it on purpose.
Yes, really good fliers will sometimes try to impress the judges with uniform low pullouts. I grade them down, just like pullouts too high.