Dude, you aren't listening. If you are "hopping", you don't know how to use your brakes. It's got nothing to do with the kind of roads. Learn to use both your brakes. Otherwise you'll run into a bear or a jackalope or whatever. The whole "back brake is safer" thing has been debunked repeatedly and there is no reason not to use two brakes. There is no advantage to removing the front brake. The weight difference is negligible and it will make you look dumb, like someone sticking a spoiler on a jeep. Learn to use your gears. The fact that you aren't using them reflects that you have poor control over your bike.