I'd have to disagree with Dick. I fly a 16 pound Midwest Extra that will jump out of a hover using my Brison 3.2 swinging a Zinger 22x8. You can watch the vid on my website. Hovering power is around 33% throttle, and you can hear the low RPMs required to hover it. Obviously the less the plane weighs the better it will perform, but at 16-17 pounds I think you're still doing well with a good 50.

Another point to bring up is I believe Dick is in Utah, which is WAY higher in elevation than where I live (at sea level). That may explain differences in performance and power preference.