If your are talking about the ones you put in hot water - yes I've used them. And they are every bit as good as the regular vanes. To install them you want the water just short of boiling. And position the rear of the tubing just a bit overlapping the nock. If you don't, when the tubing shrinks it will expose a bit of the end of the shaft. It makes for a neater job to overlap the nock a little and if you have to, trim the excess off with a knife or razor blade. And another plus, refletching is a snap. IMO they are perfect for the guy who doesn't want to mess with glue or fletching jigs.