RE: High wing loading on Stik with a wacker engine??
I have converted the Great Planes Big Stik numerous times with very good success, but it has nearly 1000 square inches of wing area. (966?) I usually put the lightweight and powerful Echo 24cc engines on them, with electronic ignition to lose the weight of the flywheel, etc. They fly great. My brother has one with a Stihl 20cc on it that I converted and he loves it. The heavier Joss Stik with less wing area would be marginal I believe. It would definitely fly, but it would be heavy...
Then there's the Giant Stik.... I have one of those with a 48cc twin I made on it, a smoke system, etc. Still floats like crazy. Always amazes me how long it will glide with power off.
AV8TOR