I spent 3 days and nights here at Kingman Wash in August and was nude the entire time.  There were several other people camping there who were nude as well, and any neighbors nearby weren't really all that near at all and they didn't seem to mind.  I did some nude hiking and spent most of the time just enjoying the area.  It was hot here, but it was not uncomfortable when nude. ;)  I love the Lake Mead area and I love the fact that nudity seems to be fairly common and accepted on the lake and the surrounding area.  The burrows were a very welcome plus that added to the enjoyment of the trip.  I'll definitely be back.