Bring some duckies.
A few years back somebody was rowing my buddies 16’ NRS down the big ditch, (said buddy was also on trip in his yak), and rower overinflated the shit out of the inner chamber, as I remember the story, at least.
Hit a rock and put a very long rip down the tube, they comendeered a couple of duckies, and limped the thing into camp. Took every scrap of patch material on the trip, to get the thing usable again.
Funny thing was, that I was sitting at my buddies place of work, and I knew about the episode, before the TL did, who was running sweep. They got a new tube, and more patch material, donkied in, at phantom.
So the moral of the story, you don’t really need that extra chamber, just bring duckies! (At least the dam things really are good for, something.)
The river probably thought, “ he is such an insignificant, pitiful, little creature, with such a short time to live, I will let him go this time, and try to teach him something” - Buzz Holmstrum