- Wide band: 110%, just short of touching the shrouds and spreaders. While it is possible to run a full genoa between the shroud and the spreaders, it risks sail damage and is more trouble than it is worth.
- Medium band: 90% Just short of lapping. A nice setting if single or double reefed, going to weather.
- Narrow band: 70%. Small, only 25 % of full area. Good for double reefed and blowing like stink.
Yes, you can always adjust as you go, but rolling sail in a breeze isn't good for you or the sail. Advancing the furler line to the correct setting before unfurling is MUCH easier.