Not to take away from Isaac's great creativity but, for L2T, another option is Spoilerons. Pushing the ailerons up 5 to 10 degrees to kill some lift and add drag once over the trees may be helpful. Most radios can handle this easily and what ever pitch mix that may be required to maintain glide. I have but don't use a three position switch with flaps for takeoff, center for flight and spoilers for landing.