I've ridden DH trails in BC, Rossland and Nelson, on my XC rig. I did a bike camp is Rossland last month where they taught us a lot of DH techinique that can be applied anywhere. Brake control... of course you can control your speed because out of control = crashes. Trick is to learn to use front brake well, and NEVER SKID. Skidding is bad, bad, bad... poor techinique and a cause of trail erosion.
Also, get your butt out of the saddle, attack (neutral position) be really dynamic and weight BACK on anything real steep
Cindy Devine, Canadain World champ downhiller was one of our coaches...
penny s