Yeah, that dude is a hoot! I saw his slingshot-machette video a couple years ago. He's definitely a sling shot ninja!

I've also done some research on sling shot bows. Some of them are pretty comparable to a recurve! Of course, in a survival situation if you had room to take a slingshot set up as such and a bunch of arrow, you probably could have had room for something even more useful...like a PLB!

Still, I don't mean to knock the sling shot. Perhaps I should pick one up and seriously try to learn to shoot it well. How many shots should one expect before changing the power band? Ammo is relatively compact and light, and while having real ball bearings or lead shot is going to be the best, improvised ammo would be easy to come by in the field.