I don't ever put myself in a spot that I can't have complete control in and no way to escape. I plan to shoot as many people as possible in any given area. So a steep hill waiting for a couple people wouldn't be on my list. Chances are, you'll get one shot off and miss, they'll know where you are and charge you. You'll be dead from the game and probably injured from trying to escape and made no difference for your team.
I don't know what to say to help you stay on your feet. Why do you fall so much? A neurological tick?