I hike about every other day for exercise and walk the dog daily for at least a mile. Even without a pack, it can be a PITA. Especially if my knees decide to stay home that day or another old injury rears its head. You guys may be in a much better position to BO on foot. For me, thats the absolute least desirable scenario. Hence the bike and cart suggestions. Recently got back into bike riding after a long hiatus and its amazing how much more distance you can cover with casual biking than you can walking. I'll take a sore butt over sore knees anyday. Come to think of it, a modified moped/50cc scooter might also be an option.