This weekend I am installing my two new front seats in my 15' Silverline. The old seats had a wooden framed box under them about 14" X 14" and was hinged to the rear of the seat. When you lifted the front of the seat you had a small storage box under the seat. All of the screws are loose and the seats are hardly attached to the deck.<br /><br />My new seats have a plastic base and holes to bolt them down. What would be the best way to make a new base, with or without the storage and then what is the best way to screw/or? them to the deck? The base needs to be about 3-4" high.