ive owned 4 columbia's, a 43, a 30, and now a 36 and a 29 ( the S@S designed, not the newer Alan payne.) the common weak link and thing to look for are the keel bolts, after 40 plus years they might need attention. the 36 hull is pretty sturdy and she sails very well, very comparable to an islander 36.
lots of storage but water and fuel capacity is limited, but again, very easy to fix as there is plenty of room.
here is a link to my 36 project, expected eta for 2 year cruise is in 2 months....