StackPack Retrofits
Rick, Though the Doyle StackPack is a bit easier to install when it is being assembled on a new sail, it can also be retrofitted to an existing Mainsail. The Port and Starboard sides of the system are sewed on to the sail. The patented Membrane holds the cover tight against the sail when sailing. Aside from the additional weight there is insignificant decrease in performance, and the convenience it affords is well worth it. Reefing is basically unaffected by the system. Reef lines exit through leather padded slits in the cover. Also, there is the added benefit of eliminating the use of the intermediate reef pointsand ties, because the StackPack will capture the lower part of the sail when the halyard is dropped.