DT - Have you tried still hunting at all, or do you just stand hunt? If you've never tried still hunting before, dig around a bit to find some articles/blogs about technique and give it a try. I think the change from sitting in a stand will make a difference for you. If you become tired during the hunt, just find a good tree stump nearby and sit awhile until you're ready to move again. Be slow, deliberate patient and observant (and always know the wind direction).