Hi guys,
I'm sure there are tons of threads which handle that topic but I can't find them.
I'm starting to get some information if a hammock is a good choice for the trail (it is) and if there are places where it is not usable. Maybe because of rules or because of somebody steals all the trees.
So I got the whiteblazes shelter.pdf (amazing!) and found out that behind Fontana Dam are no hammock symbols. Why?

Hope you like to help me.