Once you are up, give the rifle to someone else and change the roles. Remember not to harm yourself and do the least harm to others to get the job done.
Sit on the ground holding your rifle or broomstick in your hands ready. Have a partner or more walk through you and you need to get away and up without placing your rifle barrel on the ground. Your partners can push and pull you using their legs, body and hands and you need to keep thinking about the open space around you so you can move and work. Speed up the drill as you go till you have people running at you and note how you can do more than one thing at the same time and be more effective. (to simulate the rifle barrel avoid placing the broom beard on the ground)