Canvas snaps?

[Browndog15]

Hello, having a drop down canvas made for my hardtop. What is the general consensus for the type of snap to use? Boat will be mostly freshwater, with 2 weeks of salt.per year. Stainless with the gel, aluminum, etc?

[MacCTD]

Stainless with Tefgel would be the best if you have to use snaps, if there is any way not to like mounting a small cleat and running lines from the curtain to them. IMO I would avoid snaps at all cost if possible.