[fourteener]

Lesherp,
I work for the NPS, and just conducted a site visit at Wahweap Campground at Glen Canyon NRA, and it has seen a lot of improvements in recent years. I would recommend to look at it on google earth, as shade is lacking. I would stay near the interior of the campground (vicinity of the showerhouse) for added wind protection. Also, the NPS has an area called Lone Rock (north of Wahweap). Due to low water it is in a state of 'primitive-like' status. Again if you google earth it you will see an area about 3/4 of the way down the paved road that there is a loop and some primitive spots to camp (this looks quite exposed to wind). One of these would be your best bet, and have you somewhat close to the backcountry office in the early AM. You may want to give the park a call to get a better feel for options in the area.
I hope this helps!