After reading all the comments here on hammocks I finally decided to hang on this year's section hike in May and just ordered an Expedition Asym Zip from Hennessey. Once it gets here l plan on spending a night or two in the back yard to get a feel for it, especially in terms of sleeping on a cooler night. For past trips I've been using a Therma-Rest Z-lite pad along with a twenty degree bag and am wondering how this will translate for hammock use.