I never realized what soft field technique was good for until one day I had been flying too many hours and had to pee like a race horse. Found an attractive looking dirt strip and lined up for the approach. Was starting to feel pretty good about my impending urination when suddenly met the fact this field was soaked like an Amazon rain forest. I firewalled the engine to keep the nose out of the mud and barely managed to get airborne going the other direction. Soft field training is for getting yourself out of stupid situations.