Skating in bike line - legal defense tactics

A while ago, while returning from a luncheon in Cupertino, CA, I was
stopped by a police offer and ticketed for skating in a bike lane.  

Specifically, the infraction is VC 21966

"
Pedestrian in Bicycle Lane

21966.   No pedestrian shall proceed along a bicycle path or lane where
there is an adjacent adequate pedestrian facility. 

Added Ch. 751, Stats. 1976. Effective January 1, 1977.
"

Preliminary research suggests that the ticket is worth fighting and that
the case is winnable.

My first inclination is to attack the "adequate pedestrian facility
clause".  The first section of the sidewalk in question is rather narrow
and downhill.  I was going about 17mph when the officer first flashed
his lights.  The second section contains areas where the concrete is
actually missing.

I would like to hear other thoughts on how to handle this.  Preferably,
I would like to hear from people who have actually fought a similar
ticket in California.   What worked?  What didn't?

-- 
Use the From: header.  Sending mail to [EMAIL PROTECTED] 
or [EMAIL PROTECTED] will only result in frustration.