I tried that this week-end.
at first, I had the seat bottoms all the way up ("locked"), and I was able to lift the pin for the seat backs really easily with one finger. Of course, the seat back wont fold down if the bottoms are locked, if that makes sense.
So, the next try, I had the bottoms up, but not locked, and the pin was a total b**ch, not moving!
So, I just tried it again. It seems, on my truck anyway, that having the bottoms all the way up makes it much easier to unlock the pin
In other words: bottoms up, unlatch the pin, unlock the bottoms, and fold everything down.
Just a suggestion for those who dont want to add a handle / cable / whatever to it!