That's not necessarily true - there are PLENTY of places in CO where bicycles are perfectly legal & motorized are not.
The mountain bikers get mad (and rightfully so) when THEIR "m-fing greenies" get stuff closed to them, citing trail damage, yet still allow horses. Bicycles are not allowed in wilderness areas, but otherwise, they're largely fair game - some trails/areas which are not wilderness DO ban bicycle use, but that's the exception, not the rule.
I've often wondered about that - assuming you're talking about Wasatch Powderbirds - they opened in 73. When was that area deemed "wilderness?" I know there has been huge strife between the skiers and Powderbirds, MAINLY because the access from Alta is SUPER easy - the b/c skiers use the same handful of drainages, which WPG's permit area covers. WPG _can_ go farther out than that, but with the cost of fuel, I can't blame them for dropping on Wolverine/Cardiff/etc. I was under the impression that WPG was grandfathered in.
Dunno. I don't live there anymore. I've been on both sides of the heli - in it and buzzed by it. In it = unbelievable, in a matter of minutes, you're at the top. Buzzed by it = holy sh!t, where'd that come from? It flies _low_, and you often don't hear it until it crests the ridge and gets all apocalypse-now on your hippie a$$.
The majority of BC skiers (not all of them, just like for us, some "greenies" won't be happy until snowmobiles are banned - a small percentage of Wasatch b/c skiers won't be happy until helis never fly) would be satisfied if the heli-op simply used the (slightly) less accessible by-foot terrain that's within their boundary (they do not have free reign of the Wasatch). I get it, I suppose, you spend an hour skinning up from Alta, as you're getting near the top, the bird swoops in and dumps a bunch of skiers. Shrug. Way I figure, we both earned our turns - they just earned theirs at a desk.
.02c. Sorry for the thread hijack.