So, Ive sold off all the trappings of my ground dwelling past and I'm ready to buy my first camping hammock. Im still torn between the Blackbird and the BMBH but I think I'm leaning towards the BB at the moment for its greater flexibility to be used with different tarps.

What I was wondering is this. I like to sleep on my side/back with one arm extended either under or above my head (sometimes both). How much room is there around your head when laying in a BB? Would I be able to extend my arm much before it was stopped by the hammock? Any other thoughts?