Heres a couple of pictures of the crate I added. I started with a standard milk crate and added a piece of cutting board and (2) rod holders. I also added a backing plate to the scotty mount which some stainless fender washers and nylon lock nuts, its strong. Finally I added a length of bungie in the front so I have a place to put my paddle when I'm reeling in a fish.
I like the way you have that rigged mulv it looks fun......even got a sponsor i see ....