Framed picture of course.Too many variables but the approaches already posted are good. What hasn't been mentioned is the buddy you are fishing with and where they are from. If I am fishing with somebody who gets to fish the salt a lot then its pretty much the standard catch a fish and switch. Or get several shots and don't connect then switch.
But if I have a buddy visiting then I may let them fish most of the time. A guy comes from Idaho for a short visit he is going to get most of the bow time. I can go catch a redfish tomorrow or the next day or the next day. He has to go back to the snow.
And it also depends a LOT on how the fishing is. Had a buddy here two weeks ago. Fishing was really awful. I let him stand on the bow a lot. But he wasn't getting shots anyway. So its not like I was missing anything by being on the back. And in fact since he's a better caster than I am our odds of sliming the boat were a bit better with him on the bow than me. Besides I got to pole him to a true trophy.....gafftop on fly......LOL