You are right, the screws are still there, every other rib. I am thinking they must have ground them down after removing the keel. The fiberglass looks like some one just did a crap job. The epoxy or whatever is was, was not applied neatly and it was not sanded or finished, just painted over. I took it on the pond and it is a lovely little boat to paddle, I just hope I can do it justice when I get to the restoration. I guess I will need to research the specs on the keel. Anyway, thank you for all your help. I am happy to have the information.
Susanne