Pete,

I just saw your post about were you found the cracks. Have you been getting water in that hull all the times you have sailed previously??? Did you stand on the "board" to help right the boat??? I've had friends with P-19's that have "poked" holes in the swingboard trunks due to small stones getting wedged/trapped between the board and trunk. I even have cracks in the rear end of my trunk due to flexing of the sides but they are watertight and are cosmetic only. Doesn't mean that those cracks are not the leak point .... but I would check further ... are the cracks near the bottom??? If so you should be able to fill the hull with 3-4" of water and see it drip out. If you put much more water in the hull make sure you support the hull properly as water wieghs alot and you could damage the hull if you had the boat sitting on rollers on a trailer

If that is were the leak is try sanding the area ... coat w/ WEST epoxy and with a vacuum cleaner "suck" the epoxy into the cracks ... recoat after suction ... let cure. You could use one layer of some 4oz cloth also but there is not a whole lot of room inside those trunks

Good luck
Harry