I came to this sport late in life. Lately I have been reading a lot of Gierach and Mcguane. These guys talk so much about Bamboo it finally got me interested in the subject. I only own or have used Graphite. Can someone please tell me the differences in how the two materials cast. Obviously the bamboo cannot be made as long as graphite can in a fly rod. Most of the bamboo I see advertised is 7? 6? maximum length. However, there must be some really great reasons that bamboo is still be used, please tell me what they are.