I'll be honest, I'd rather run to Harbor Freight and pickup a few of their 10" x 8" (9.6 x 7.4) camouflage tarps
for less than $10.00; the tarps weigh 2lbs, but these are kids not ultra light back packers. The HF Tarp was what I started with when I started Hammock Camping and works great. It got me through some serious rain. The first image from an overnight hike with scouts the second is the setup I used with the Civil Air Patrol while were doing support for the Balloon Festival here in Jersey. The second shot was taken right before a sever thunderstorm rolled through, everything was bone dry.