I am building a Shearwater double with flush hatch covers (standard). The rear hatch cover had a slight bow based on the forms. However, the shape of the deck flattened out from the time of being held on by the shrink wrap to the attachment of the deck to the hull.
I have glassed inside and out and ready to varnish. The hatch sits proud by as much as HALF AN INCH on the front side. I have stacked heavy books and weights on the hatch for weeks but it is not flattening out.
I do not want to use the wooden toggles from the kit to hold it close. I was planning on using bungees inside the hatch. My concern is that they will not have enough force to pull flush. Any suggestions?