Brian,
They do a none electric version for slope soaring which they say:
"has a wide speed range. Whether light slope wind or wind force up to six - "Gurke" is ready to take on any challenge."
Slope Gurke
But I'm thinking the electric version would be good for "mini hotlining" at Cashmoor, or just climbing under power and having fun on the way down, it does seems rather agile! And then when we have some decent wind in the right direction take it along to the slopes.
It looks so simple to build, even Chris73 might finish this one if he chooses to build it :evil: