Hi Jason
The wing-keel H23 had at least two different masts, Kenyon (constant section) and Z-Spar (tapered above the forestay). The recommendations for mast rake, bend and shroud tension will get you into the ballpark. After that you have to tweak your rig to get the best results. A Loos gauge will definitely help.I'd also suggest that you set up your backstay so you can adjust the tension while under way. This is a VERY useful adjustment and it's not hard to do. E-mail me at oneprof@earthlink.net for the procedure and more rig tuning tips if you're interested.PeterH23 "Raven"