Would anyone have a plan for a helmsman's seat that would go between the the cockpit seats in the back of the cockpit. I want to put my gas tank under it.The seat would be made of teak slats. The problem I have is how to make it secure to the side walls of the cockpit seats. I would like to be able to lift it out to get at the gas tank under. I saw one in the Jan/Feb issue of Good Old Boat about the Tanzer 7.5 page 47. I would like any help I can on how to make it. Thanks Matthew