Blazing of MTB trails

New MTB trails in israel are often marked like so:
http://www.automag.co.il/wp-content/uploads/2011/03/IMG_7188-Large.jpg
How do I tag this is the route:mtb relations?
Based on this wiki: http://wiki.openstreetmap.org/wiki/Key:osmc:symbol I should be using some combination of circle, drop and pointer, and define a new foreground “biker”. Any way to test how this is rendered?
Thanks

The rendering seems to be available for Israel at hikebikemap.de. See the black trail to the East of the Anava single.

Since you it will be misleading to set a single direction (left/right) for both directions of the trail, I’d suggest

osmc:symbol=blue:blue_circle:blue_triangle

By the way, who is responsible for the trail blazing? It would be good to capture that in the operator tag, just like operator=itc and operator=kkl.

Ratag is responsible for the Israel Biking Trail. But I’ve see this mark on other trails as well.