This is a cheap and weight saving method. I use bits of Tufnol with holes drilled in them in it attached with carbon fiber rowing and NM-epoxy to the spars. In the holes I have Dymema strings and loopes. With the strings and loops I can knot the sail to the spars with kind of Truckers Hitch knots. The booms have three strings, the yards one string. The three strings is for reefing.
A video belov illustrates.
To be contiued…