Where do you guys Tack your code O? A Hunter 34 I would think would need some modifications even possibly one of those snubby sprits to attach the tack line.
I was able to attach a block right to my anchor roller for the tack line of our Asymmetrical. Very little extra work involved.
I tack mine to the stem fitting, a few inches behind the headstay... Not optimal, but there's no other good solution on my boat, and it works fine...
I'd be very wary of flying one off a deck-mounted sprit... Most of those are fine for an asymetrical, but a Code 0 can generate some very impressive loads, far higher than asymetricals flown at deeper angles. In addition, the bow pulpits on most American boats will interfere with the fair lead of the taut luff from an anchor roller to the masthead, on anything less than a fairly long sprit. Flying a Code 0 from anything other than a purpose-built sprit, constructed integral to the hull or deck, can be risky...
seem that you already have the sail you are looking for. try the 170. if not a gennaker is a good sail for a cruising boat. a code 0 is a bit much to handle unless it is on a furler. they are designed to be used on a race boat that is rated for a fractional jib to be called a spinnaker for rules sake but can go up wind. they have a very limited points of sail and are not good for a beam or wider reach. a beam or wider you should be using an Asymmetrical spinnaker. or gennaker code 0 sails are very expensive $ 3500 to 4000 for your boat. a code 0 sail that is cut higher at the clew and fuller is not a code 0 it is a gennaker made out of expensive code cloth. a true code 0 is a upwind sail for very light winds under 7 knots.
There continues to be a lot of confusion regarding the nomenclature pertaining to these sails, and it has evolved to a certain extent since they were first introduced in the '97-98 Whitbread. North Sails, for example, would definitely not agree with your last statement...
The earliest Code 0 sails did have higher clews than many today, and North would still call my sail by that name... Personally, I find mine to be of far greater utility than even the sailmaker describes, it's a great reaching sail, and I've even flown it to very good effect almost DDW, wing on wing with a poled-out genoa... If a "true" Code 0 is only to be used upwind in less than 7 knots, I guess the Volvo boats are no longer using Code 0s, 'cause they sure don't see much of those conditions during the race... (grin)
In the opening leg of the 1997-98 Whitbread Around the World Race EF Language unveiled a “secret weapon.” It was a new close-reaching asymmetric developed by North sail designers dubbed the “Code Zero,” and it vaulted EFL to an early lead the team would never relinquish. A decade later, North “Code Zero” (A0) asymmetrics are versatile members of mainstream inventories... not only used by boats that spend a lot of time close reaching in light air, but also in windier conditions and wider angles.
What they do
Code Zero asymmetrics fit effectively into the crossover gap between a genoa and the ubiquitous 3A asymmetric reacher. They provide additional power at approx. 40-degrees AWA in true wind speeds under 10 knots; conditions that are typically slow with conventional sails. Code Zeros have also proved effective for reaching in 15-25 knot winds at 80 to 90 degree apparent wind angles. Most boats sailing offshore can put a Code Zero to good use.
North Sails: Code 0 (A0) Aysmmetric Spinnakers