I have lazy jacks. I have had them since 97. I find that I often hang up on them on the uphaul. Often I have to shake the sail out to get it to haul up all the way. Also, I have difficulty storing my sail, but Duanne Dunn said you can get sail covers that are easier to utilize than the cover I have. It is a cover that opens at the top and not the bottom, so the sail goes right in. I have to spend ten minutes getting my jacks adjusted....I have become use to the jacks, but do take time.....20 minutes to button everything up, could do in ten without jacks, but then wouldn't have the control on the boom that I wanted and needed.
I wonder if a boom kicker wouldn't have been good enough for what I needed on the Mac?
Lazy Jacks are naughtical and effective. With slugs and full battens I think it couldn't get any better....

Randy