Leaks from the top
I have the similar problem. Decided to make my boat dry from the sky. I am in the process of remoming the 2 toe rails. We stripped the hardware off the boat, because I intend to do other works on it, paintig the deck, ... I have one of the toe rails already off, and the bedding of the old putty stripped off. In the process we discovered that on my 1979 30 feet hunter, the bedding between the deck and hull, was on long stretch only bonded to the hull but not to the deck, so water probably came from there. Last Year we had recaulk chain plates and some stachions, but I still had water comming in. So you may start from the other reply you had to your question, but if it does not correct the situation, you will have to do as I am doing. It is a big job. We took off the toe rail on the port side. It is easier on that side because we have access to the bolts alle the way from the back to the nose of the boat. Take note that once the toe rail is off, you can take off the old bedding prying the deck to lift it up, but you have to remove some screws that are holding the hull to the deck and that are hidden under the toe rail. I beleive that when you to this job you have to do booth sides. I will use sicaflex 291, altough many say to use 3m5200. I choose not to use that product because once it will be there if you have done something wrong while putting the caulking, it will be very difficult to come back. It is important also to make sure all the preious bedding is off, and you must clean the parts to be bonded/caulked in order to be sure you will have no more water intrusion. Hope this is some help to you. They are a few documents on the net if you look to hull deck joint topics that will give you more information.Gook LuckGeorges Patrick Savaria