Alltrikes

Cantilevered platform  hanging off the rear of his RV-  Not a trailer at all.  Wires suspend the platform's rear edge.

The extensions above the RV roof hide the wings. (He usually has a bunch of HG wings up there too to take on his adventures to Mexico)

More of Ole's Swim Step here: 

      http://www.learntohangglide.com/WeFlewMexico.htm

and HERE