I too have a Bighorn, and I absolutely love it. I've been up and down the Potomac River, most of the creeks feeding into it, and around the Chesapeake Bay in it. Couldn't ask for a better tube. Only wish I had a better rod holder. I have a single rod holder that straps on and holds the rod nearly horizontal.
ed500x - yours looks a really good option. How do you mount it to the tube? And what are the black pieces in the 3 right pipes? Are the components simply glued together? Or are they threaded?
I would appreciate any info you can provide. Thanks.