Great suggestions Paragon...these are things I would never think of. I went for walk in the river valley on my lunch break today and found lots of great stuff. Fishing spots, edible mushrooms and flowers, and 2 working fountains...if the fountains didn't work, your wrench could be a great help in a pinch.

The only filter I would take is one that can be flushed out and reused like the Sawyer ones. I've been trying to find one locally to buy. I'd like to try putting it inline on the hose of my 3L drinking bladder. If the filters need to be replaced I'd be better off taking my MIOX pen with spare batteries...less space and almost as much water can be treated (depending on batteries of course).

The sling shot is also a good idea though I'd need to practice up...I haven't shot at a moving target with one of those since I was 9.

I missed where you mentioned primitive living skills dweste and you hit the nail on the head. These are the skills I don't have and excercises like this force me to think about what skills would benefit me if I learned them. I don't need to be an expert in all aspects but there are at least a few key skills that I'm going to get a grasp on this summer.

You're also right about the rule of 3s and this is something I think about a lot when I get to thinking about stuff like this. There's no way I can carry 3 weeks of food so presumably there will be a point where I'll run out if my journey takes me longer than 72 hours (or however much food I'd planned for). At that point we're fasting unless we have the skill and tools to find more. Since that's how I think about it, I couldn't decide where to draw the line...so I drew it at no food to see if it could be done. It's all still academic because I haven't actually done it...but it's coming.