If you are a DIY on the cheap guy like me, I will share my thoughts. I did a couple of DIY sails and sailed with guys who did others....
Plastic tarp never stops making noise all day long. Tyvek makes way more noise until it is filled and then it is quieter. If you go nylon (can actually be a better deal if you buy a slightly soiled roll and nylon is quiet), carry a needle and thread and don't pay the price for rip stop. The rips happen while raising it and you can stop raising, stitch it and keep raising in a matter of minutes and the rips never happen to most people. But they do happen to maybe a third of the people with nylon sails so be prepared. Nylon is more of a pain because your sail will have multiple panels and needs a decent sewing machine. Worth the hassle, IMO. The multiple panels is a problem with a plus - any rips are constrained to a small section. Anyway, that's what I got that is relevant...