Thanks for the Mertons link Scott, that's close enough to drive to and actually feel the stuff.
I thought I'd put up a few pics even though it's still on the trailer.
Here's the view from the transom:

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A side view:

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Closer view:

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Look at the delamination at the forward end! I know I'm gonna have to grind back til it's a good bond.It's quite a mess, huh?