I have an SeaArk 18' with the jet tunnel (the older rectangular tunnel - 2003 I think).
There are drain holes on each side of the tunnel sitting down in the runners that go the full length of the boat. It looks like the drain holes are a 1" pipe that was welded into the bottom of the runners. My problem is that the previous owner either hit something pretty hard on the port side drain hole or it was bent bouncing on the trailer (trailer bunks put most the pressure on the rear 6 inches of the boat, but that's another issue). The port drain hole is bent into a slight "D" shape, with the flat side down. Structurally it appears to be fine, all the welds look great, but the drain plug doesn't fit very well into the hole and it slowly leaks water. It leaks slowly enough that it isn't a big problem, but it is pretty annoying and adds weight.
Anyone have a suggestion on how to bend this back without damaging the hull? Other fixes?