I am finishing a Great Auk14 for a friend.
The deck has been stripped and glassed on the exterior.
I had a weeks delay, while the weather turned rainy and humid.

The deck is now warped into the hull.
As you may know the majority of the deck is flat on each side to a peak, with local rounding on the gunwale around the cockpit.
On the stern where one side of the deck might be 10" wide, there is a dip ~3/4" deep.
This would cause a puddle on the aft deck if I just glued it down.

I need to get the warp out and fiberglass the inside surface before I join deck to hull. The decik is stripped in Cedar, glued with Titebond 2, built over forms and backbone purchased from CLC Boats.

What do I do to get the deck flat? It obviouosly will not set back down on the forms.