I was interested in getting a stackpack system for my main but my current main as a few seasons left in it but is not full battened. Does anyone have any experience with a retro fit stackpack setup on a standard battened main?
A stack pack is just a lazy jack system incorporated with a sail cover.While a full battened sail may work better, it certainly isn't necessary.
Most sailmakers that I know will make their version of the Stack-Pack.