On Tuesday, February 11, 2014 12:56:19 PM UTC-5, Soartech wrote:
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.

Given the trend in sailplanes toward multiple dihedral breaks toward the tip, and the associated benefit of spreading the flow field spanwise, it seems that your statement is based upon dated knowledge. Or possible it applies in some cases and not others.
UH