I think the easiest way is pop, drop your ear to your shoulder, suck your legs up and reach for a safety grab on the side that you are dropping. I tend to flail and or pencil if I don't suck my legs up and then it gets ugly. Also you want to keep your eyes forward and on the horizon like in Luke Van Valin's video. This helps because you are never blind and it will keep you straight and from spinning into 180.