replying to Eigenvector, Iggy wrote:
Both smart choices. But, if you find yourself in the situation again and neither
are immediately available. The best way I've found, is to screw-in (3 or 4
screws) a loose ledger board (1/4" of slack space, I prefer a wobble) in the
middle of the joist. Then it's, lift the panel up onto the ledger board, shove
it into the screws (some indenting is perfect) and screw-down the free edge
you're holding up. Very simple, lightweight, compact, quick, easy, self-aligning
and you can do 2 sheets or both sides with 1 install of the ledger board.