You can add these Stainless Steel Rings to your hammock suspension, positioned underneath your tarp, to keep rain from travelling down your suspension and soaking your hammock and quilts.
 
These can also be positioned in other areas for other uses; sewn-on Tree Straps enable you to thread the strap through once passed around the tree. Spliced in your Whoopie Sling for ease of attachment via a midi carabiner etc.