i have used the hennesy hammocks and they are the best sleeping set up there is!! much lighter than carrying a rollmat, tarp, mozzey net etc
and far more comfortable
I have used three different types of hennesy hammock and the best is the ultralight backpacker A-sym (the tarps on the older designs are not wide enough)
i have slept in this for 5 months on the islands of mauritius and reunion
and sat out a force 4 cyclone in it.
dont worry about sleeping in a bananna shape, in a hennesy hammock you lie diagonally across the hammock and this means your back is stright
you'll quickly work this out when you have your own
Success is not measured by what you have, but by what you can do without.