Ill be heading off to attempt a thru hike of the Pacific Crest Trail this weekend and thought I'd share a little update I made to my shelter. Last summer my fiancé and I thru hiked the Appalachian trail using a tarp & bivy combo. We were very happy with it and generally used the bivys as a ground cloth to put our pads on and only got in them a few times when it was really down pouring and water was splashing under the tarp. However, I've done enough reading on the vicious clouds of mosquitos in the Yosemite area and beyond to up our bug defense. This is the mountain laurel designs "serenity bug bivy" set up under my zpacks 8.5 x 10 flat tarp. This is the 2 person size bivy. We will pick this up in Kennedy meadows before heading into the sierra's. Until then we will enjoy all sorts of cowboy camping, sleeping with the scorpions and snakes!