I love my Rev II in high winds. I fly it on 85 or 100 foot lines to give myself more reaction time and I use extended handles about 17 inches long. The handles are probably too long making the kite twitchier than it should be, but I figure it's good training for my relflexes.
That said, I often fly my blast and supersonic in high winds usind the same technique that you would use in very low winds. One Arm forward and one arm back. In low winds where, the kite is almost vertical, it gives you more lift. In high winds the kite flattens out from vertical letting the wind spill out. When flying like this the top handle does most of the work while the bottom handle acts as a gentle guide to work with the top handle. The botom lines will be very slack. The imortant thing is to keep the bottom lines slack so you don't get your arms pulled off. Time your turns for the edges and play with the float.