We're surveying our Lance 1121 at present, the wings have all ready been rebuilt. There are several other places suspect. Unfortunately I forgot a boating repair technique using West System (wood epoxy saturation technique) the epoxy is very thin and turns the wood pretty much completely sealed from absorption. Because epoxy breaks down in sunlight any exposed areas must be painted. I think this method will be a good way of forstalling, and reducing the rot.
The West System products are available at West Marine and other boating outlets.
Forgetting stuff is getting old, as I am!