Hikerduane, glad to see I'm not the only one obsessed with getting out as much as possible.

You probably don't want to button the Silsheter up tight unless you have to. I learned this on the first couple of trips. Fortunately, there lots of options for ventilation. The whole shelter can be set up several inches off the ground. The rear center can be propped up one to two feet by using a guy and a stick. (Though not visible in the photos, that's what I did on all three nights of this trip.) One or both doors can be left open depending on conditions. But in some conditions, such as a humid environment and very still air, condensation is just going to happen, no matter what you do. If you go to the August archive on my blog, you can see the Golite poncho/tarp set up as a lean-to. Despite being open on most sides, I still got condensation when the wind died down. Fortunately, the Silshelter is large enough used as a solo shelter that condensation rarely becomes a problem.