Just thought I'd share this in case it helps someone else down the road. We did a Deso trip last month with two boats; me in my Aire 156R and a couple of friends in his new-to-him 30 year old Riken. About 33 miles into the trip a welded oar tower on his frame snapped off just below Flat Canyon. We got tied up and I ferried them to the shore right before Dripping Springs Rapid.
We got to shore and started brainstorming how to get out of the situation. The oar towers were welded onto steel plates so even if we found a way to attach the broken one elsewhere on the frame, it would be impossible to move the other to make them close to even for rowing. And the steel plate made attaching it there impossible. We thought we were going to have to deflate his boat and load everything into my raft. Fortunately we came up with the idea to cannibalize the NRS foot bar off of my raft and combine it with some backup pipe clamps he had for his pins and clips setup. He ended up rowing the rest of the 50+ miles down the canyon like that with no problem. In fact, he said the slightly elevated fix felt better than the original. I'll never head out on the river without pipe clamps again.
Some pics once we got back home and started cleaning up the boats: