amazing-neat stuff
being a helicopter pilot myself, just remember that stalls are not an option, they can use airspeed to any advantage they want, and believe me, slowing to 20-30 knots when you pop over a tree line is a real advantage when you need to get back down, or change direction.
Rgeardless, those are some tight quarters. Watch out for lines like Pierre said, but watch out for deer and rabbits too!