I just finally got a wood kayak paddle made by Jim this year. I love it. The flex and feel of the wood is great for my used and abused shoulders and elbows. I learned to paddle and raft guide in the Ohiopyle area over 20 years ago. Lots of paddlers around those parts use Backlund and Snyder sticks, as well as others: RainbowWave, Gonzo, etc. I can't believe it took me so long to finally get one.
I think I will order a wood single bladed paddle from Jim this winter, as well. I raft guided for many years, and have used a Norse (64"), Werner (62"), and Carlisle (60" and 62") raft paddles. From my experience, I prefer a paddle with a standard sized blade, and a length around 60"-62". I am about 6'2" with a long "wingspan". I prefer to sit closer to the side and a bit lower and J stroke/sweep/pry when I am in the back of the boat. In my opinion, if you sit in the middle of the back and rudder (draw/pry) or need a larger blade to move the boat, you are doing it wrong.
I don't guide much at all anymore. But, I do have a Shredder now. So, I will probably order a 60" paddle (same length as a custy Carlisle). The longer ones tend to "trip up" when R2ing, and that length would be better for Shredding. If I do hop in the back of a "round" boat, I can still use the 60" by sliding down closer to the water. That's my story. Don't know if it helps you at all. Regardless of what length, shape, wood you decide on, I think you'll be happy. They really are functional works of art.