Michael –
In the past couple of years the issue you raised regarding rear casting braces, walking around the boat has become more and more of a bigger deal to me. Seems like a simple solve and some manufactures are figuring it out. A slender brace fixed to the floor in the back that does not box-in the rear fisherman and a pedestal rowers seat seems to be all it takes. This would allow smooth passage from bow to stern and vice vera for everyone on board. Navigating the oars / oarsman not withstanding. Talking about this issue with the dude on the drift boat lot near my house I learned that the pedestal rower seat is a sticky-wicket. He got super geeked out and technical but from what I gathered, for the pedestal rower seat to function properly given the stress on the hull and the slight bending the floor goes through, to be designed properly, the seat ought to be mounted on a raised floor separate from the hull. All very interesting. He just got in a Clacka Fly Pod, designed by Kelly Galloup, very nice and easy to walk around. Attended the Film Tour in Jackson Hole last week which got my fly fishing motor running at high speed. Any day now.
Kb