Some of the guys that show up regularly are wicked good. Unlike the MA terrains, we build and use custom terrains specifically for tank fights. You'll find multiple spawn points into the battlefields. Also, rivers with multiple bridges, but for some odd reason most people ignore the extra bridges and go straight for the throat!
Before you come in, you'll need to calibrate all your tank sights or it will be a very frustrating night. I set my sight range to the throttle on my ch joystick. After that, it's practice, practice, practice and there's no better place then the middle of the biggest tank battles in AH.