I have a 2x6 deck board (treated lumber) that is 14 feet long and it's lying across 6 joists and a ledger on the east end and a frame board on the west end. Right now it's not screwed in anywhere. If I stand on the east end of the board the west end lifts up on the north side, and if I stand on the west end of the board the east end lifts up on the south side.
This board is expensive and so I want to straighten it out so it's flat all the way across the deck.
Any suggestions? The only power tools I have to work with are a Sawzall, a circular saw, a jigsaw, a Dremel and of course my impact driver. I've thought of putting a clamp on the west end to hold it down but I'm looking for the best professional solution.