On Sun, 23 May 2010 19:09:50 -0400, "Josepi" wrote:

Most pro framers, I have seen do not use compressed air, they swing a
hammer. Try carrying a nailgun up into a framed roof rafter assembly while
hanging on to the last truss member you hammered in to get at the next
piece. A hammer and puch full of nails makes an easier climb and the nials
are removable for a few eeks until they rust or set into the wood.

They sure do around here. I think one house of six, built in the last year in
my neighborhood, had a hammer on the property. They aren't too bothered
scrambling around on the rafters.