Ok, I’ve slept in a Hennessey hammock for years and some of what people are writing is true, but some of it is just bogus. You don’t sleep in a ball if you lay diagonal; it is flat because your weight is distributed across the fabric. You enter from the bottom which is rather strange, but effective. Bugs are no problem with the bug mesh over the top.
Now the being cold can be true if you don’t prepare. I’ve slept in my hammock in 20 degree weather and stay warm enough, but prefer temps in the high 30’s to 40s’. (I use a 20 deg down bag) You need to have some sort of insulation underneath, if not you will get cold. They make a pad for the Hennessey and that works great, cot a few bucks though.
Trees can be an issue if you are above tree line, but if you improvise anything is possible. I would buy an 8x10 sylon tarp for the fly as the rain fly that comes with it is undersize for windy rain or snow.
They are lightweight. I put my pack underneath no problems with critters and I’m where raccoons, chipmunks, squirrel and bears are, (NW Washington, ONP and Cascades Mts)
Some of the best nights sleep in the woods have been in my hammock.
