I have a Tributary Tomcat Solo that I had been using for lake fishing. That meant sitting in water, though, giving the self-bailing aspect of the boat. I ordered an NRS fishing seat for it. I was concerned about the width, but it wedges perfectly between the tubes. It's awesome. I was concerned it would raise my center of gravity and make my boat tippy while casting, but it is the perfect height. The backrest is such an improvement, too.
I definitely recommend it for making one's whitewater IK into an able fishing boat.
