Floor drains
With the old 290 lb 115 Tower of Power the boat was self bailing, but there is no way with any modern engine so the drains had to go.
Although it looks like it is just a big blob of potter putty, as you can see in the cross section, there is actually wood in there.
For the most strength I glassed it from both sides at once which is kind of a pain since you have to jack up the boat (the drain was over the trailer bunk).
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