Leaking Starcraft keel - where to get fixed?

[GoodToGo]

I have a 1997 Starcraft Superfisherman (19'). Last year I developed a leak, I assume from a loose rivet. I filled the bilge with water and water dripped out the back end of the hollow keel. On this boat there is a riveted hull which then a has an additional formed cover plate riveted over the keel. This makes a hollow keel which is open to the water from the stern. This hollow keel covers whatever rivet is leaking, so from the outside I have no way of knowing which rivets are bad, or getting at them to replace. Maybe a couple hundred rivets hold the keel on. This looks like a major job, are there any places in Minnesota, preferably northern Minnesota (Duluth?) that do this kind of work? I am in Grand Rapids.

The hull has a 10 year warranty, which is of course expired. There is not much for Starcraft dealers in Mn. Thanks.

[Steve Bakken]

It's probably not a rivet. There is a seam in the aluminum where the bow starts to curve upward in the front. This seam is sealed by a rubber gasket which is sandwiched between the hull and the keel, which dries out and crackes. Every time we've repaired one of these, that gasket has always been the culprit

[Surface Tension]

I agree with Steve that it is likely the keel gasket.

If it were my boat and considering the location of the leak I'd try a sloshing compound.

It is used in aircraft floats to seal seams and rivets.

In this case you'd pour it in the bilge and let works its way to the bow.