Here on Sailboat Owners in the shop you can purchase one. You can also check out Rudder Craft and have them make you a custom rudder. Is the original beyond repair? Unless it was completely destroyed they usually can be repaired. Do you have more details on the damage?
Thank you for the feedback. I have not seen the rudder as of yet. They are pulling the boat out of the water today and I will know more about the extent of the damage when I see it. I did check out Rudder Craft. It did not seem like they had a rudder for my size. I have to call them. I just spoke to Newrudders.com. They can make a new one within two weeks for $2,100.
I previously had a H37C which I had to replace the rudder as I had bent shaft. At that time, Foss Foam out of Florida had been making the rudders for Hunter and had the mold. I was able to order a new rudder and had them increase the thickness of the rudder tube to eliminate that weakness.
Alan J.. S/V Skol C400, former owner of '85 H37C Valhalla