[camaraderie]

I agree with the 5/16HT and 5/16 3-strand nylon recommendations IF you do not have or plan to own a windlass. If you think a windlass will be in your future...pretend you were selecting one now and make sure the chain is compatible with the gypsy on the windlass you would select but at least 5/16.

I agree with the 35' for the Rocna but note that Fortress only recommends very short chain lengths as does Danforth. I would get 20 ft. and keep it easy to handle. 200ft. of nylon should be plenty for the Bay.