You might also check out Grays Meadow Campground, which is on the road to OV (6000').
I had thought OV saved some sites for walkins, but I am not able to confirm that on the internet. YOu may want to check with Inyo NF. Or you could change your permit and camp off the trail at one of the lakes on the way to Kearsarge Pass.
P.S. I just checked. Grays has one site for 7/5, and then a bunch of sites for 7/6.
P.S.S. It looks like OV only allows reservations for 16 of the 30 sites. But I'd still confirm with Inyo NF.
Last edited by Akichow; 06/25/14 04:15 AM.