1. Take the boat out in a moderate wind with the headsail you will be using the most.
2. Lower the centerboard until it is all the way down, and then raise approximately 1” on the hoisting gear.
3. Sailing to windward with moderate amount of heel and with main and jib sheeted fairly well snug there should be the slightest tendency for the boat to head up to windward.
4. If so, your boat may be considered properly tuned and will require either no or minor adjustments.
5. If you experience more than slight weather helm:
(a) Make certain main sheet is not pulled in too tight.
(b) Try moving jib or genoa leads forward.
(c) Try tightening outhaul, downhaul, and or cunningham adjustments on the main.
(d) You may be trying to sail in too much wind with the genoa. Try the jib.
(e) Crew weight may not be properly distributed. Crew weight to keep the boat from heeling will help.
(f) Rake mast forward more.
(g) Raise centerboard slightly.
(h) Move centerboard stirrup to most aft position.
6. If you experience slight lee helm or neutral helm, before you panic: The San Juan 23 was designed for speed with the jib in light winds with no or little heel with NEUTRAL or slight lee helm. With the addition of the genoa and a little heel the boat should have a slight weather helm.
7. If you experience excessive lee helm:
(a) Make certain main is not too loose.
(b) Try moving jib or genoa leads aft.
(c) Try slacking outhaul, downhaul and/or cunningham adjustments on the main.
(d) Crew weight may not be properly distributed - heel the boat.
(e) Rake mast aft more.
(f) Lower centerboard farther.
(g) Move centerboard stirrup to most forward position.
8. When reaching or running, the centerboard may be raised to overcome weather helm
and reduce drag.
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