Well worth a trip, Nick. It is not like any other canal you may encounter. I think the air draft is something like 90 feet - yachts go though with their sails up. The locks are big and unlike locks on other Sottish canals you are allowed to work them yourself. We have cruised the Crinan twice on our little Sea Otter, gamebird, and on one of our trips the boat we shared all the locks with had paid for help (at that time you could book and pay for help, not sure what the arrangement is now) . The paid help did one side of the lock and we did the other. One rule we weren't aware of on our first visit was that you are not allowed to use the locks after 5 o'clock. and we went up the flight from Ardrishaig and when we came to the last lock in the flight there was a bridge across it. BW operate the bridges! However, gamebird, being only 26 feet was no problem as we just cruised under the bridge when the lock was empty. The BW guys freaked the next morning when they found what we had done :-) .
It's a beautiful little canal.
haggis