Wide range of responses here, but no one is considering your present situation/boat/sail plan. There is probably a big jump in sail area between your asso & your 135 genoa. This is the first thing to consider -actual sail size. Then look at wind angles you want to fly this sail in. Then talk to a sailmaker. A Jibtop of the same overlap will only be slightly faster than your genoa - a little better shape, & sail area up higher (for same overlap). What is overlap/sail area of the asso?TL;DR: I'm wondering what the feasibility/use case is for a Jib Top on my C&C 29mk2 for Cruising in the PNW. What are your thoughts on the performance of a Jib-top over the barberhauled Genoa? Is it worth the extra effort of potential sail changes single-handed?
I'm primarily cruising from Vancouver to the Gulf Islands and back and I find myself close/beam reaching most of the time while crossing the Strait of Georgia. Apparent wind angles typically range from beam on to ~10 degrees off close hauled on these crossings depending on where I'm headed and wind strength.
I'm finding I've got a pretty big gap between my brand new 135% Genoa barberhauled outside the lifelines and my Asymmetric Spinnaker which came with the boat which has a wire luff and seems to have a cut suitable for closer wind angles. In ~3-8kts I can carry the A-sail at about 85 degrees true but above that I have to bear away or go back to white sails.
I've been thinking it might be worth getting my old 135% Genoa re-cut as a jib top to fill in this gap. A lot of the time I won't beat out of English Bay or Trincomali channel due to time constraints with tides but I prefer to sail across the strait. This means I'm not really concerned about the lack of close hauled performance and I'm not super worried about changing the headsail once in the gulf islands where I'm likely to be beating to the next anchorage. I'm typically taking my headsails down while at anchor rather than leaving them furled with my UV cover hoisted.
Ya Bruce King was big on double head rigs. I raced on an Ericson 37 back in the day. Double head rig was slow except in a narrow wind range and angle of about 12 to 16 true and 55 to 70 ish true wind angle. Switched to a standard genoa after one season, was faster upwind in all wind speeds.
Great idea, but how many C&C 29 Mk IIs do you think have had a JT even made for them? Maybe there is some more modern race boat with similar rig dimensions?I have an idea, do not touch your standing inventory, you might need it.
Go on line and look for a USED JT for your boat. Compare it against an outboard lead for your 135%. You might like one over the other.
I can picture in lighter airs with more waterline the wind angle would be too far forward. With a hull speed of 6.3kts the apparent wind angle is a bit more forgiving for me in my experience.I end up sheeted in too far for a JT coming home from Silva Bay about 60% of the time.
Also, cutting the bottom off your sail just makes the sail smaller, a real JT has the same area as your Genoa and would typically have a fuller shape than an all-purpose Genoa. What you are talking about is more of a Yankee jib.
I've spoken to North who I've bought a new Main, 135% Genoa, and two symmetric kites from this past year. They told me not to bother with a new JT but recutting the full shaped old Genoa may make sense.Have you spoken to a good sailmaker/designer about it? If not, drop me a PM and I'll send you one that I'd trust to give you good advice.
The a-sail is ballpark 150% judging by where the clew ends up when fully sheeted in light air. I haven't measured it because I don't use it when I race and don't want my rating to be affected by it.Wide range of responses here, but no one is considering your present situation/boat/sail plan. There is probably a big jump in sail area between your asso & your 135 genoa. This is the first thing to consider -actual sail size. Then look at wind angles you want to fly this sail in. Then talk to a sailmaker. A Jibtop of the same overlap will only be slightly faster than your genoa - a little better shape, & sail area up higher (for same overlap). What is overlap/sail area of the asso?
So until you give us dimensions of asso, I think there are two choices: replace 135 with a 150 high clewed sail or consider a free flying jibtop(?) Code 0 (?) depending on how close winded you need it to go. Set this on a bottom up furler forward of headstay, 2 x 1 halyard.
I'm not sure what to compare it to but it's 11'4". Definitely a headsail driven boat. The thought on the forward draft with the bagged old Genoa was my thinking.Isn't the J dimension on that boat pretty big? Recutting an old 135, with heavy forward draft, may do just the trick. Still a bunch of sail area forward. Likely wouldn't be a true JT, but may be worth it.
I know the mki has worse form stability, maybe you're thinking of that?29 mkii lacks both form stability and rig size, so first step in this process is to adjust your expectations, there is a reason there are about 3 of these in the whole province.
Second step is to recognize that a dollar spent below waterline is worth 10 dollars in sails, so make sure you have a folding prop and then budget $500/year for a diver to clean the bottom, in Vancouver that will get your boat done every second month. Combination of these two is worth an hour on a typical crossing of Georgia Strait in a 29 footer.
Final item, more sail = more power. A 135 genoa beats that same genoa cut down with a high clew, which typically reduces the sail to a 125 or so (measure the new LP). The real solution here should be a 155 genoa for that boat. If you then need still more oomph, the standard sized asym kites from North Cruising Direct are good in this application.