Yea, definitely find that problem before launching the boat. When I was young, my dad had an early 80's Grady Tournament. The starboard fishbox drain hose broke off at the thru-hull, and he didn't know it. The actual barbs broke off the plastic thru-hull. He went about 80 miles offshore, and my uncle heard water sloshing around in the bilge. By the time they heard it, the hull was filled up to the floorboards. Too late. While running, the thru-hull was out of the water, but after a while trolling and the boat rocking side to side, it started filling up. Once the boat got heavy enough, the thru-hull was completely under water and it was dumping into the hull with pressure behind it. The boat eventually sunk down to the gunnels. Luckily he had a Grady, and that's as far as she went. They did have to sit in thigh high water until the coasties came to their rescue, for about 2.5 hours. The coasties towed his boat back to shore (probably wouldn't happen like that these days), and they managed to get it on the trailer. He was very lucky. Ended up rebuilding the engine, and fished it for many more years. But, I sure wouldn't want that happening to me. That story is what drove me to one day own a Grady White, which I now do. I've been on a boat that completely sunk at the Chesapeake Light Tower, with no other boats around. That was operator error though. I don't ever want to be in that predicament again. So, as said above, replace all the thru-hulls with stainless ones and replace all the hoses. Cheap insurance.