BTW: I am presently having a problem with rot. It is IMO a given that all old Morgans that have been driven have rot. It will be in the sill, rocker, lower parts of the rear hoop. Anyplace where water can accumulate. Most Morgans have upholstery covering this rot. Mine do not. I keep this area open so it can be inspected and treated if needed. Looks terrible but IMO necessary for a pre-cuprinol Morgan. When I find a soft spot I treat it with CPRS. "Clear Penetrating Epoxy Sealer". I source this from the "Rot Doctor" here in Seattle. I think any Marine Chandler will have something like this product on their shelf. It turns the rot into Epoxy with wood fibers in it. Easy to apply (follow directions). What is difficult is removing the Upholstery and than recovering.
