Quote Originally Posted by Lodrorigdzin View Post
It's interesting: I've gone towards ultra heavy
Ultralight tends to be about comfort while hiking - usually it's for those who are hiking 20-40 miles a day, and only camp when it's time to sleep. Ultraheavy (or also: traditional backpacking) is more about comfort while camping - when you generally hike 5-10 miles and pick a spot to set up camp for longer term. Neither one is right or wrong, but they have different goals.

Tyvek doesn't crinkle as much if you run it through the washer a time or two. It becomes softer, probably loses some of its waterproof qualities but retains enough to keep you mostly dry. I've used it as a ground cloth after having washed it, and didn't find that water came up through it.