How do I best prepare for the UH-72 course at WAATS?

Don't worry about preparing for it too much. It is a very simple airframe and easy to fly. If you really want material, the hangar in daleville, al outside the Rucker gate has the RFM (rotorcraft flight manual) and flashcards. They should be on the website, if not, just call them.

Also feel free to email me any material, I'm on the global address list in Outlook.