the gf and i are planning on being in the independence pass area (10 miles east of aspen) the end of august for the pro cycling challenge and am wondering about campgrounds and places to hang in that area, i know there are some campgrounds in the area, but most only have a few spots and hard to find alot of info on them

just wondering if anybody knew anything about any of these and if hammocks were permitted, or if there any other spots i should be looking at in the area

difficult campground
weller campground
lincoln gulch campground
lost man campground
portal campground

thanks for the help