I just acquired my ? new? 1973 Parker Dawson two weeks ago; mine needs a new keel, which I have started to fabricate from steel tube and 1/8 steel sheet. Market price for lead was .45 cents a pound on the commodities exchange and calling scrap metal dealers the best we could find was .65 cents a pound I asked the purchasing agent (the wife} to try some junk yards, voila!!! .35 cents a pound for ? a ton.
As for your rudder, you could make one ala surf board style as you don?t have to worry about pintles and gudgons just put some stiffeners in for the lateral loads.
Also try IDASALIOR.COM, which makes HDPE replacements rudders.
For a plethora of information and PD specs go to
www.midshipyachts,com
We hope to be finished with our restoration by Christmas.
Good luck with yours
Herb & Doris MacIntyre
Astor, florida
herbmac1@aol.com