A few years ago, I posted an "ultralight" antenna design in the MYOG section called the "KD5IVP Backpacker Yagi".
http://www.backpacking.net/makegear/yagi-antenna/index.html

Turns out, a young gentleman built my antenna and posted a "how to" video on Youtube, on how to build the thing:
http://www.youtube.com/watch?v=kPGmad2MMWM

....and another using my design to make a 211 mile contact from Mt. St. Helens using a walkie talkie:
http://www.youtube.com/watch?v=nb6c9DdMkyc

This antenna weights 2.1 ounces and is what I use in the backcountry when out of cell phone range. I've made contacts well over 150 miles and through satellites using it. I don't know the fellow who made the video but he did a fine job!

So, if you have your amateur radio license, build this antenna. It can save your tail, and also doubles as a tarp pole.
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paul, texas KD5IVP