Remember me posting "Note to self: I still have the limbers to cut." back about here. Well I was busy congratulating myself on a nicely glued up panel, trimmed and all, when I realised I'd entirely forgotten about the limber holes in the battens and keel.
I've been on the forums and had lots of advice, from "you don't really need them" to various ways of fixing the problem. I've cut the limbers for the other side now, this little detail will have to wait until I turn the hull and try to figure out how I'm going to drill a hole at the bottom of a 1" batten beside the plywood, with only 2" to the next batten.
The current plan is to use a right angle mini ratchet screw driver to run a screw through the batten.
Once that's through, I will feed a coping saw blade through the screw hole, and start the long slow process of cutting out the limber. I expect to have to make up a holder but that will be the least of my worries. A dowel and sandpaper should help me finish off.
The battens from the transom to the last frame aft will be reinforced with an extra 1/2" of oak. This will mean that even with a 3/8" hole, there will still be 1" of Oak. Add the strength of the . Add the strength of the plywood to that and It should be plenty strong.