Tarp Question from New Guy

[Shackleton]

New to this site and to hammocks, but not new to outdoors. I've had a few expeditions with my Eno Double Nest. I'm buying a single nest for my 12 year old Boy Scout who is also an experienced outdoorsmen but new to hammocks. Please forgive me if this is a dumb question but would this make a good tarp:

http://www.agriculturesolutions.com/...per-sq.ft.html

I'm thinking 12' by 12'. We are outdoors all year long (Michigan) and camp rustic (we normally forgo campgrounds).

Thank you.