Id check into the flip flops....I had the seats in my 18 and HATED them..much better if my leaning post I built. however, I rarely sit while fishing all day long but I can see where perch and walleye fishing it could be usefull. I have a large "deck" of starboard on my leaning post that I sit on too though. Next to the built in livewell.
You should have no trouble unloading the leaning post though as they are very popular.