Iron keels, pain in the *&%$
Hi, I had a H31 with an iron keel, I loved the boat but the keel was always a sore spot. I finally went to the trouble of having the yard sand blast it down to bare metal, then they primed it with a heavy duty commercial rust proofing, I faired it and gave it two coats of west system epoxy, this worked pretty well, but the keel does work a little when sailing so almost every year you may have to touch up the keel to hull joint. I personally will never buy a boat with an iron keel again, although I did have this boat for 13 years because she sailed so well (deep draft). Good luck