Essentially we're talking about an extension line the runs from the top patch to the retrieval line, and the retrieval line no longer goes to the top patch?
Another trick is to use a line at the bottom patch. Run 12" piece of line with a stopper knot through the patch, and run the retrieval line through a ring on this line, then through the bottom patch and on up. This helps get the foot of the sail into the snuffer hoop sooner.
What? That does not make sense. If you run both lines through the bottom patch how does this work? If you meant the 12" line on the clew that is to pull more sheet into the bag and does need a longer halyard.