Perhaps a rain fly similar to this could be made that draped over the hammock and just allowed to hang down almost to the ground but with enough room between the cover and the ground to breath easily. It would look sort of like a table cloth. When the wind blew it would simply go with it on the bottom but would be secured to the spreader bars for topside stability. Would not be airy like a tarp though. Could be made of Event fabric. Mule
There are only two kinds of people that understand Marines: Marines and the enemy. Everyone else has a second-hand opinion.
Gen. William Thornson, U.S. Army