Maybe this belongs in the almost-over-the-hill forum, but here goes. I am over 50, and have discovered much to my dismay that I can no longer tote a 40+ lb pack, so I am looking to save weight wherever I can. One obvious improvement is to replace my 9-lb 2-man tent with a backpacking tent weighing 5 lbs or less. One possibility is a single-wall tent, which has an obvious advantage weight-wise over a tent with a fly, not to mention the reduced volume. I have not used a single wall tent since the canvas era (see above concerning my age). I don't remember them being terrible to sleep in, but it's been ages. Any thoughts on single-wall versus a tent with fly? Am I likely to wake up covered with condensation from my own perspiration/respiration?