On Monday, January 25, 2016 at 3:25:56 PM UTC-5, Jonathan St. Cloud wrote:
If I read the contest rules correctly bug wipers are not allowed, any idea why? I do not have bug wipers nor have I ever needed them, but I have seen several gliders with the wipers and I know they are popular in Europe.

I would suggest you read the rules again.

"6.6.2 An external cleaning device is any device with moving parts designed to clean the exterior of the sailplane during flight, such as bugwipers.
The use of such devices is allowed in all classes Rule 6.12."