I know it is a little overkill, but I bought this boat at a race in Atlanta this spring, the hardware is setup for a 1/4 shaft for some reason. 3/16 would be better but I don't wont to change the hardware.
Mike
Sorry it took me a long time to get back with you, I had some boats to get ready for the Atlanta Race This weekend. I need the flex shaft coupler and 5/8 tubing as well. I have attached a drawing of the shaft I need.
Mike
Prop Shaft.pdf