An alternative to this ingenious solution is to dismount the mirrors
from the van, turn them over, and tighten the bejeezus out of the
little set screw in the bottom.  I did this several weeks ago, and so
far they have held through 80+ mph apparent wind.

Steve

Steve & Liz Fallin,
Proud Parents of Brendan Carmichael Fallin (9/15/96),
Love Slaves to Madeline & PC (feline empresses of the universe),
and Caretakers of the Coracle, our 84 VW Vanagon Westfalia.
Visit us at http://www.geocities.com/Heartland/Hills/7864