I don't, but I know someone who does. The only kind I ever used back in the day, was the kind that mounts with a fork that rests under the stem and over the bars. I don't think the forks are sold separately from the bags, so although you could probably get a cobbler to sew some sleeves into the side seams of your bag, it probably wouldn't do you any good - you'd have to buy a new bag anyway.