I stand corrected, not "very", but "pretty". Buddy? Why didn't you just say Stoneroller, or why didn't he post them? Get my point?
Given the fact that those are two things that tend define performance the Tarpon must have some whitewater blood in it right? So if the coosa is from a whitewater hull, I can see some rocker, but where's the rest of it? WW yaks aren't very stable because you don't want to be upside down in a yak that wants to stay that way. I don't believe WW yaks have runnels either, buut then they aren't SOTs either.
Face it, they designed it off of successful fishing yaks and engineed in features tweak it toward flows. Nothing wrong with that, but when you do that you often give a little too. Hull performamce isn't rocket science, its more a case of deciding what features will make it sell and how much can you cut some features.