On Sunday, February 9, 2014 10:03:36 AM UTC-5, firsys wrote:
A wing 3 ft above the CG will give excessive roll stability; to

get an acceptable roll rate there will have to be substantial

anhedral. It will be at least look peculiar but there may be

other detractions.

Wings with anhedral have been shown to be more efficient (L/D) than straight wings. I can looks up the study if anyone needs to know more.
This may be the reason paragliders perform as well as they do despite large amounts of drag.