Anyone have any tips for how to determine appropriate line weight for an old bamboo split cane rod? I bought one a few years ago from a friend who was in his late 60's at the time and said it was his father's who he thinks bought it in the 1940's. It is definitely journeyman quality with no line weight markings but worth the few bucks I invested. I christened it a couple of years ago on the Skagit fooling a a nice standard Skagit size bow using a 5 weight line but think it might have been a little light.