I'm contemplating adding a second small seat on my 9' pontoon (outcast version for sportsman's warehouse). The rider would be one of my two young daughters. I was considering putting an extra set on or across the rear platform where I'll still be able to row and she can ride along. The weight capacity on this boat is 400# and me, gear and her would be well below that. Any suggestions? Photos of your own modifications? Past attempts that did not go well? Thank you.