And watching Discovery the other day an 80 year old Typhoon pilot (with cobwebs and everything) said that to kill panzers they'd richochet rounds off the ground to the underside of the tank. However, this was only done on hard surfaces, since we have very, very few hard surfaces in AH it wont be a lotta use.
How bout a big city HT? Something the size of Paris......oooooooh, big buildings to fly between......*homer sounds*