I nearly stuck my nose into the "screw or nail" thread but all I would have said was use gal nails which seemed to be the consensus.
It got me thinking though about some things I saw a few years ago for secret nailing decking.
Like a galv clip that has a spike either side that bites into the edge of the board, a thin plate nails to the side of the joist holding it all down.
Anybody remember them? Were they any good?
Cheers
Bill.