What is a good Naugahyde vinyl weight for pontoon seating ,I don't want it hard an brittle but soft an durable with all the protections like UV ,cold crack scratch res., mildew, non fade, an use a good thread to sew it with. I have a 24df sweetwater that i need to have re upholstered & what thread so when i talk to the upholstery shop i can ask what they use ? Thanks in advance all help would be appreciated 