Handy man jack, using the spare tire as a base, while water is running under the back half of the truck. We would jack truck up until the jack was maxed outand fill rocks under the tires. Then set it down and watch the rocks sink. Repeated this several times and got out. It took 7 hours but we got out. Another time we crossed a large draw and couldnt get out the other side(frozen slick ground) and rear bumper was against lower bank. We couldnt go up or back. Handy man on front bumper, maxed out, then we shoved truck over several times until we were parallel to ditch and got out. Only 3 hours that time. These techniques saved us, but are dangerous. Use serious caution.