180'ing into fakie on flat is probably the easiest way to do it, just try to land really straight and when you're trying to countersteer take it easy, because if you start jerking the bars around really fast they'll keep going back and forth out of control. So basically do as little as possible to mess with the fakie.
Speaking of fakies, a couple days ago I was riding at a gas station and I started a kinda long fakie, and this guy in his truck drives by and yells "Woah, that kid is riding backwards, dang!" hahaha.