Your best defense against snakes are high top boots. Most snake bites on people who are upright and fairly low on the leg. Of course, high top boots are not ideal for hot weather either.
Your best defense is care in moving through brush. A trekking pole is useful, placed periodically in your front, especially near suspicious brush clumps. Stay alert, especially during the cool morning hours.
My eperience from similar jobs in Arizona brushy terrain....
one or more gifts or other benefits from the co-op.