I don't think there are, or should be, any "Snowboard Only"
places....That said, I did see signs at brighton years ago that said
"snowboards only" on one of the park hits. Sadly, a skier tried to jump
it, trying one of those "leg spread" deals. It looked like he was going
to do it, but turned his knee around on the landing...

Bear Mountain California probably comes closest, since it is dedicated
almost entirely to freestyle boarding and skiing - I think that it's
probably 70% or more of their business.

Don.