Back in the TheMightyHobie18 days tillers had a very limited life span as they easily fell under the rudder and bent backwards. The best I found was a 3/4" x 18# titanium tube. It was light and strong and would flex quite a long way without kinking and then sprung back every time. Corrosion was a non issue too <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />

Tiger Mike