I spotted these self-proclaimed 'traction aids' on sale at my local NAPA
for $15/set includes semi-canvas storage bag.
http://www.mainemade.com/members/profile.asp?ID=1189
seems like a decent enough price and would have likely gotten my 87
syncro unstuck when I was driving thru my back yard in 24" settled sugar
snow (wasn't any snow traction) and a rear wheel sank into soft mud (was
over my septic leech field)

I'm planning on picking up a set, worse case is I resell them @ a swap
meet for $10 err $20 later on..

they hook into the tire treads with small non sharp bent ends, then are
drawn in or 'ramped' onto
length is about 18-24" long well made steel with sharp points on the
'turf side'

Dan Stevens
1987 Irish twins (syncro projects)