Re: custom top
I have considered it many times. I need to make an enclosure for my big boat. I have the bows already. I think the hard part will be locating all the specialty parts, zippers, buttons and the like you need to do it. And we do not have a sewing machine. I wish you would go ahead and tackle it so I can see how to go about it.
I once saw a website where you could order a pattering kit to make tops. Darned if I remember where I saw it.