@hoverman: Thanks for the link!
Bixel-type is very stable in strong ground effect zone but not as efficient as others. Lippisch-type is efficient, pretty stable, and it has big ground clearence but it's handling changes depends on speed. Jörg-type stable in strong GEZ, efficient, and could reach high speeds, but it has small ground clearance, and it can't operate out of GEZ. So every WIG has a balance between handling/stability, ground clearance and efficiency. Thats why I think you should build more than one model, you should find out which type (it could be a hybrid-type) is good for you.
I uploaded a compilation of Flatwing Lippisch onboard videos: