The canvas guy said that there were several types of sumbrella fabrics and several types of vinyl fabrics, but that the characteristics were basically the same for each individual type.
He told me that Sunbrella would be water proof for the first year and then would need to be cleaned and re-coated each year to stay that way. It also breathes better, which is obviously important in warmer climates (maybe colder ones too, I'm not sure).
And, he told me vinyl will stay water proof for as long as the fabric stays intact, but doesn't breathe at all. Also, periodic cleaning is the only maintenance required.
It was his opinion that vinyl would be better for the locations I'll be using the boat, but I would like to hear from you experienced TF members, including which type of Sunbrella material or which type of vinyl material you prefer, or recommend.
Thanks again.