I know that Bill Lee designed a cruising interior for one of the 70's...with a new deck/interior/transom modifications....etc. There was no reference to the cost of doing said work
, I can imagine it being almost the cost of the boat.
That said, I raced on a 70 a couple of times here in the Great Lakes
, as there was a pretty active group of them. They are big boats that require a crew of at least 3 just to sail, at the least. We usually had a crew of 10-12 for races, but could barely get by with 3 if there were no spins to manage. Crew quarters are pretty spartan, but manageable. If you wish to really create a nice cruising interior, it will be a lot of work
, and $$ to do so. If I recall
, they need at a minimum, 10' of water
as they draw 9'. They are fast, really fast, but can be beaten by newer smaller racing
boats. One owner I raced with spent $47K on just a new mainsail
, now this was a state of the art sail, so a good cruising sail "can" be 1/4 of that. Having nearly 1500 sq ft of sail means furling
headsail, and lots of fun taking down the main..something to consider.