I installed a set of wing root fairings and winglets to a Standard Libelle
here in NZ.
The owner was thrilled with the improvement to the low speed handling and
how much quieter it was in the cockpit.
Glasfaser Flugzeugbau sell the kits.
http://streifly.de/home-eng.html
Prices and details are all there.

Paul


"Pam Kurstjens" wrote in message
...
I would like to hear from anyone who has ideas for
improving the handling and performance of a Standard
Libelle, especially designs for winglets.
PapaMike