Hey Jim. I also do the long hoop nights on the yak. Many trips are 6 to 8 hour affairs after the three mile paddle to the spot and back and all the pulls in between.
I usually load up on food before I hit the water. I bring a bottle of gatorade and a couple bottles of water with me. A couple of suckers seems to help when the energy reserves get low too.
Mostly the cigars get me through the rough spots though
