The I20 jib has vertical battens (parallel to the forestay, maybe 30 deg. angle to the leech), which allow the jib to roll around the forestay in a very tight roll. The battens are perfectly aligned when the jib is rolled and cause no problem.<br><br>While I'm sure a fully battened jib may be the optimal for boats with a big jib, the I20 has a small "blade" jib, much smaller than the P19 or H20. The vertical jib battens seem to do the job here. Since the boat has a spinnaker, you don't need a large jib trying to be a crude spinnaker downwind. Also, for a given sail area upwind, it is more efficient to put more of the area into the square-top main (look at the A-cats), and less area in the jib. This also makes the jib easier to handle (both sailing and rigging) than a large jib.<br><br>BTW, I once crewed on an F31 that had a full-batten mylar reacher. This monster was something like a 30' luff and about 20' foot. It worked really well when we used it, especially in light air. The problem was, we almost never used it because it was such a pain in the @ss to get up or down! If you haven't tried it, it's quite an experience trying to roll a sail with 20' battens and get it into the sail bag without falling off of the boat or breaking one of those $$$ battens!<br><br>Sail fast and have fun,<br>Alan Thompson<br>I20 - San Diego<br><br>