Try to get in real close to your bunker. You have to be aware of where every little part of you is, but without thinking about it. Most bunkers now days are not 2x3 feet. When a bunker is only about 3 feet wide, it's usually a standup so for the most part it's easy to stay tight. On a snake, you want to get in real tight. Make sure to either just drag your legs along or use them to push minimally. If you push with your legs too much you have the tendancy to stick your pack up in the air and get shot out. Again, especially at the snake, you have to be aware of where every little part of you is, including yout stick squeegee (if you use one).