I had a asymmetrical made for my Montgomery 15. Not standard sail for the boat. Decided on the mast
location to get the height of the 'sail head' for the sail. Designed and built a bowsprit
for the boat. After researching how to tack the sail decided on the bowsprit
so it can tack without going to the bow. With the bowsprit you need to decide on the location for the tack. I selected a tack line length of 3 feet. This put the tack up and out ahead of bow gear
. Tack line runs to the cockpit
and is adjustable. Lastly decide on how long you want the foot to reach back along the rail. Most I observed reach back to the mast
. Some come back to the last stay like a 150 genoa
Once you decide the size you will likely find a used sail for less money
than you can make it. For most of these sails
the term used is inaccurate. Many just sit in their sail bags somewhere in a boat locker.
Good luck with your quest. Mine worked out. I can set the sail solo. Change tack by taking the stern through the wind, letting the sheet balloon the sail forward, haul in the other sheet. The sail slides through the slot between the forestay and the sails luff. Jibe the main and your off on your new tack easy peasy. If your going to tack the bow through you will need a crew at the bow.
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