I like my hammock and I lay on both sides and my back.  I now use a under blanket and leave my sleeping bag open and use it as a blanket except the coldest nights.  I have some lined nylon pants and wool socks that I use on the colder nights.  In colder weather I will take a hooded (fleece) sweat shirt and have used it at night.  Now that I am usually not in my bag I do not like laying bare skin on the hammock so I usually ware pants and a shirt to bed. 
MagicPaddler