So on Saturday, we went out and measured the exact location of the wind vane supports. It took some doing and re-doing as both inside and out there were some obstacles. But finally, we got it right as you can see in this picture:
Next were the backing plates. After drilling pilot holes, on the inside one location out of three had landed where a reinforcement was already in place. So two more reinforcements were needed. I put those in place on Sunday, while Ingrid was cleaning fenders and taking off the last layers of varnish from the hand-holds. There are now no more varnished surfaces outside, apart from the companionway. We like the natural teak look better and it doesn't flake as quickly.
After I epoxied the pieces in place, I added a few layers of fiber cloth and epoxy for an even load distribution. Hopfully, next week work will start on the arch, so I can start finishing the vane construction soon.