Has anyone had a custom tank built and added fuel capacity to a 366 or a 376? The new ones come with a seakeeper so there is room somewhere to put in extra fuel. I love everything about my GW 306 BIMINI and am looking to upsize to a 376 but need another 100 - 150 gallons of fuel. I know I can run a bladder but if there was somewhere to put a custom third tank that would be perfect. TIA.