Hi Sailers, As a newbie to canoe sailing, I'm hoping someone can give me some good advice before I take a Skilsaw to my wooden canoe. I'm converting one of my cedarstrip canoes, an 18' EM White Guide model, into a dedicated sailing canoe. I'd like to cut into the hull for a daggerboard well so I can sail singlehanded without having to deal with leeboards. To prevent catastrophic hull damage in case of running the lowered daggerboard aground in shallow water, I plan to build the 4'-long weighted daggerboard with a pivoting mechanism located about 12" under the hull. If the daggerboard was fully down and I stupidly sailed the canoe onto a submerged rock bar (a likely scenario for me), the bottom 2' of the daggerboard would swing back on the pivoting mechanism. If the submerged obstruction is less than 12" deep, the pivoting mechanism won't help and I'll probably tear the daggerboard well out of the hull. C'est la vie. As envisioned, the pivoting mechanism will be a single 3/4" stainless steel bolt tightened to a torque value that it would give way and pivot only by an extreme shock--like hitting a rock at sailing speed. During normal sailing, the daggerboard would remain fully extended 3' beneath the hull. I know that the logical way to prevent rock damage would be to simply build a swing-down centerboard or use a folding fan centerboard. For various reasons, those are not options here; it must be a removable daggerboard, lead-weighted on the lower 12" for ballast. Has anyone built such a contraption that they could advise me on the possible problems I might encounter? I'm needing help here, as I know just enough about canoe sailing to be a danger to myself.