San Juan 21 Class Association

I'll try the baby powder check next time she's in the water..... I've got another leak up front coming from under the berth and the (not sure what you call it), but the hole under the berth is full of water as well as the "tank" around and behind it is full too.... I'm sure I've got punctures becaus...

The area where you've placed the battery on mine is not cut open...
Is it possible to cut this area open like yours is?
Mine is an older '75 model SJ21 and looks similar, just doesn't have the cutouts with the wood tops...

No auto bailer, and I can't find a Plug at the back.... Does anyone know exactly where the plug should be?
Pics please....

Does anyone know the thickness of the bottom of a '75 SJ21?
I've got a small leak and will need to add some fiberglass, but wonder how thick it is.....

Has anyone came up with a way to replace the Keel Pivot Bolt without removing the keel or putting the boat up on jacks?
considering hanging the keel inside the boat and removing the bolt if I can get it out to replace...
pretty sure it's bent.