Quote:
Originally Posted by kneedeep
take a look at the built in bracket on the 27' silverhawk boat.
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sea craft stretched original hull to 25 and then a 30 inch fiberglass bracket? This will only confuse the original question of an aluminum bracket for a 20 ft sea craft that he wants to widen, Bob Seidlemann did not work with a 20 sea craft when he was alive. It was a 23 ft when sea craft company was closed up before 1995. His main claim to fame on this as he invited me there to explain while doing it was raise the original floor. and nicer and new hatch openings.The original poster is wanting to widen a single aluminum bracket for more floatation to the second lifting strake instead of the first. I believe there will be almost No floatation effect because of how little water it will be in. I have my own fiberglass mold I made from one of those seidlemann brackets for a twin engine sea craft hull shape. I am doing a 20 ft sea craft now and will have to make my bracket smaller because it is way to big. He also wants to fill the aluminum bracket with 2 lb floatation foam? I can not tell you how much and how heavy that so called closed cell foam is and how many boats I have had to remove it from. To the Original Poster If you are that worried. And I was very worried on my fist bracket that I made for my personal 23 ft formula. I would in your situation install a high water alarm in the bracket. Now at the lowest point of the bracket but above the internal flange drill and mount a 1 in diameter cheap nylon through hull with a ball valve. leave it open and run the wire through it to the float switch for the high water alarm. If you ever needed to close the valve rip the wires through and close the valve. If you do get some water in the bracket it will drain into the bilge and be pumped out by your normal bilge pump. Do not fill a bolted on aluminum or fiberglass bracket with floatation foam. Very bad Idea. Becareful about putting to much bracket on a small boat. It may be too much