1979 Potter Seacraft 20 SF new to the fam! + Restore

[shine]

nice console, perfect for a 20'

To your stringer question: there is no reason they could not be perfectly fine. Just clean up around the bases so you can see if they are delaminated anywhere, and check for any cracking. Drill test holes at the bottom to see if foam is wet, if not, fill holes with putty and put a little piece of glass over it.