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The advice given on this site is based upon individual or quoted experience, yours may differ.
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I would like to communicate with anyone who has experience installing and using a Hoyt Jib Boom, or similar spar, on a Catalina 25. I am considering installing one on my boat, Mary Afton, kept at Lake Travis, in Austin,Texas,to facilitate easy single handling.
I've crewed on a boat with a jib boom and it does make single handing very nice when it comes to tacking. But I see little other benefit. Two items, in particular, are going to complicate the process on a C-25, the anchor locker and the forward lower shrouds. The anchor locker will affect placement of the pivot or attachment post, and the forward lower shrouds will affect the length of the jib boom and, consequently, limit the foot length of the sail. The subject has been discussed on this forum. Try doing a search for jib boom and see what you get. I have hank-on headsails, but I would first consider going to roller furling before a jib boom.
Welcome, Don! While I probably would lean away from a self-tacker on a C-25 (because it's primarily a headsail-driven rig), unless you want to give up the anchor locker, you'd probably find an ordinary club-foot boom easier to set up. It would attach to the stem fitting and use a track, probably on the foredeck right at the cabin trunk. Somebody on these forums, in California I believe, did one for short-tacking in a river. A Hoyt boom would require removing the anchor locker and making a strong platform in its place, and would be a permanent change that could detract from your resale value.
Most of the self tackers I've seen on a C25 don't use a boom... they use a track and ball-bearing car mounted forward of the mast to serve as a lead for the jib sheet.
But if you really want to sail that way (as opposed to just short-tacking out of a channel), you can't tension the foot or the leach without the boom. The sail will be like bag. A feature of the rig John pointed out as I understand it is that, with a roller furler, you can self-tack (partially rolled up) or relax the self-tacking rig completely, pull out the full sail, and sail "normally". But self-tacking, it's a bag too.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.