John Galloway wrote:

I was trying to attract attention to
Dick Johnson's hint that he had tested the Sinha deturbulators
- the progress of which I have followed with great
interest on your website.

I have been intrigued by reports here which suggest that Dick Johnson
can take a glider which has been extensively developed and tested by
manufacturers (and, in some cases, Akafliegs or Idaflieg), shift the
turbulators by a couple of inches and report huge performance
increases.

Are his results reproduceable? Have they been independently verified?

Ian