Rolled (bend) the leading edge of the rudder. For me, this was a pain in the old butt. First I used a 1 1/4" wooden closet rod. Well, that did not roll it enough. Then I used an old 1/2" electrical conduit I had laying around and that slightly over rolled the edge and made the top come out a little flat. Overall it turned out O.K. but if I had to do it over I would use a 3/4" conduit with another couple of changes.