Hey guys,
Here's the story. A couple of years ago, i lost one of the drain plugs to the exhaust manifold (1/2" square drive type) down in the bilge. I bought a replacement at the local boat dealer; apparently it was a cheapo. When i went to winterize the boat before going back to school this fall, the part of the plug that the ratchet fits into shattered. Therefore, the plug is stuck in the manifold with no way to get pliers onto it or anything. I drilled a hole through the center of it to get the water out and planned to handle getting it out over christmas break. Does anyone have any ideas? I considered just pulling the manifold and taking it to a machine shop and just let them handle it. I guess another option would be to drill more small holes and try to wedge a flathead screwdriver into it. I'd then use a pair of vicegrips on the screwdriver to get turn the plug. Any thoughts, comments, or experiences would be appreciated.

Thanks,
DKJ