As the longtime owner of a GB36 in maine, although in the Brunswick area, a couple of thoughts. Engine surveyor John Pride 207 730 1323. Canvas -Mobile Marine Canvas in Harpswell, upholstery Brunswick Cushion in Brunswick. They both did canvas and cushions for our 36. Unfortunately, this is Spring and they are probably very busy. I would think twice about a bridge enclosure up here. We never used ours and retreated to the pilothouse when it was cold, wet or windy, which describes a lot of the weather here. Visibility from the pilothouse is great, the wipers wipe real glass, and heat emanates from the engine under your feet. Concur with the advice on the tanks, a good look at the tops near the fills for rust, and treating any with OSPHO or equivalent, and rebedding the fuel fills on the decks will eliminate any future damage. Our '88 tanks were in great condition when we sold her last summer.