as snowboarders you all have a responsibility to be vocal any time you're near someone or passing them from behind on a trail - especially if they're the swishing back and forth type.
a simple holler out of "on your left blue jacket" or "on your right t-shirt lookin' like a dress" from 25 ft or so behind someone makes a lot of difference and you won't have to slow down and play frogger to get around them.
I've done that from day one,.. Doesn't always help. I think that has a lot to do with in-helmet audio! (...that or plain ol' selfish dumbassedness!!!)
I've always done this on the MTB trails too when I encounter hikers or on the rare occasion when I'm overtaking someone on a bike, works even worse there!! Then someone suggested a bell for the bike. Now when I give it a ring before going into a blind corner,.. 9 times out of 10 I round the curve & people are already on the side of the trail!!
Wunder if I can rig something to use the bell with the snowboard!!