According to Loco, there's no such thing has high tech dacron sails!!!!

I would say that's probably true dimwit. I just bought a new tri radial main
using Dimension's new Square weave Dacron cloth. I wouldn't really call it "hi
tech" I have a Kevlar pinstripe 155% Dacron genoa. I wouldn't call that "hi
tech" either. Once again "hi tech" would be Carbon or PBO these days.
S/V Express 30 "Ringmaster"
Trains are a winter sport