I've got the rudders repaired and back in the castings, shimmed properly. There's much less slop, which should reduce the side loads some. I have filled all the holes, one of them with silicone, in the hope that if pressue builds the silicone would give before the rudder explodes.
I like your ideas on bedding the rudder in the down position in either epoxy or silicone. Thanks guys, I hope to be back on the water tomorrow!

Dave