Independence 31 Blessings
I have a leak issue but further aft, I suspect primarily the Seahood fasteners. I'm going to drop the Vinyl headliner for a new deckhead finish and while thats' gutted out all the cabintop fasteners will be rebedded.
A couple of issues come to mind specific to the Independence 31;
And vs the the Cruising 31, where the 1/4 berth was eliminated in favor of a Nav. Station, there was no longer ready access to the underpinnings of the cockpit. Specifically the Cockpit scupper Drain thruhulls.
I was having "unexplained water-in-the-Bilge" issues. The Scupper drains were my first suspicion, I had done as recommended by Glyn and installed a floor deck hatch in the cockpit. With the now-proper access I proceeded to replace all the hosing associated with those drains. In the process, when intending to exercise the two black "Marlon" reinforced plastic thruhull valves, the first one I addressed, with minimal force, the handle sheared off! I was out of the water at this point but how alarming a thought is that. Without the deck hatch access, imagine discovering an apparent flow of water from back aft, struggling over top of the Aux. one discovers disloged hoses and has a Thruhull valve shear off in your hand!
I would suspect due to the inaccessability issue, those thruhulls on LAYLAH had not been touched in 25 years. Replaced the Valves, the pair of them and moved on.
Next time there was an excessive amount of water (in a short time) in the Bilge I opened said hatch while under way, dropped down in with a flashlight and spied a trickle coming down the belly of the hull from behind the Helm Seat. We were on a port tack at the time with a following sea and when I opened the hinged seat/ hatch at the Helm I firstly noted the amount of water that free floods in around the quadrant. Secondly, upon closer examination I could see some flexing between the floor and the side panel of that Quadrant Box. The FG Tape/ Tabbing had delaminated and water was flowing in as the Steering/ sail/ rigging loads flexed the boat.
Simple fix then, remove paint, dress off/ add some surface texture with a grinder and then go to it with epoxy and added layers of Fiberglass cloth.
I have heard of this Quadrant Box issue arising on at least several other boats in the Ericson 31 Fleet, so look for that one.
The Deck Hatch which I've seen advertized "retail List" for $800. I got mine from Hamilton Marine for around $300. several years ago and had it powder coated. It will likeky outlive the Boat.
You can catch a glimpse of it in this Image;
<img src="http://img.villagephotos.com/p/2006-1/1138028/Hull%20_63%2C%20BinnacleR.JPG">
Concerning your supposition that the I 31 is a great Couples' Cruising Boat, you're absolutely spot on. Best of luck finding yours.