Gqsmoothie, it's more a matter of technique than anything else. Your bike is dynamic, you should treat it that way. I have loads of mountain bike experience and I tend to brake like a mountain biker. Often times we have to be off the saddle with our knees locked (or nearly so) for balance purposes while braking on steep terrain. You learn very quickly how to shift your weight back and forth small amounts to keep the brakes doing what they are supposed to be doing...giving you control. I disagree with Sgtsmile that the front brake is friend on steep trails. Depending too much on the front brake is just as bad as depending too much on your rear brake. Your brakes work together, you have to find the position between them to keep the bike from doing something you don't what it to do...like throwing you on your head.
As I've noted above, skidding on trails is bad but learning how to skid and how to play with the brakes to make the bike do what it's supposed to do isn't. Go out and learn how to brake in all situations. Learn how to skid (use old tires and don't do it on public trails), learn how to brake hard with the front wheel and still keep the rear wheel on the ground (hint: shift your weight backwards as the wheel starts to come off the ground), learn how to properly panic stop. Learn all this stuff by playing around on the bike (in the proper setting, of course) to see how far you can push it.