Just found this chair at sport authority. it is absolutely perfect for strapping to a cooler and giving you real deal chair level back support- not crappy crazy creek style support that moves, and never feels supportive. But, it is also easily removed and stowed away if you don't want it (pull out for flatwater sections?) its so structurally sound that you really don't need to strap it down in flat sections. folds nice and small too.
Customized Stadium Chairs from Stadium Chair Company
I've tried all the options for an over the cooler rowing chair- DRE and AAA flip brackets, DRE mesh chair, crazy creek etc... I loved the DRE meshie, but it was huge to put in the car or a sail on top of the car (I 'm a roll and go guy), the flip bracket is nice, but had its issues too (not removable, need a cooler underneath, or if it is a self supported bracket (dre) you only have one width for the bay. sometimes for simplicity I just want to sit on the cooler or not bring a seat for weight reasons, and have the seat vanish away. couldn't do that with the other options.
The chair is made of super tough welded tube steel, has a DRE-like laced seat system, has a perfectly placed welded crossbar that allows for easy strapping to a cooler or platform, has a thick, bomber looking rubber gripper on the bottom that really grips the cooler once strapped, has the only real deal back support I have found in any detachable, folding option, was $35 at sports authority, and best of all, I just found that I can order one in Packer colors!
check it out