Sometimes, you have to pull the hull out to get the deck assemble to fit -- at least that has happened to me a number of times. And there are times when you have to install a temporary spreader stick. But for those times when you just need to pull it out a little to get the bevel of the hull to mate with the bevel of the deck, an automotive radiator hose pick is just the right tool. Harbor Freight sells one for $2.49: http://www.harborfreight.com/8-inch-radiator-hose-pick-96572.html

I find it very useful. If you are worried about the sharp point, you could grind it down, but it hasn't given me any trouble.

Jim