I made my own 3 bay frame for my mini. Have taken it on the San Juan a couple of times (there is a picture in the Boat Porn thread, post #256 I think). My wife and kids like rowing it, and it gives us just a little bit of extra space on those trips.
My frame has a small cooler in the one bay, the middle bay and a small dry box in the other bay. It is symmetrical, so you can sit on either the cooler or the dry box to row. The dry box sits higher, the cooler lower. Super versatile that way.
I tend to paddle it more than row though, and took it on Westy last year at 10,000. Probably the most fun I've had in a raft in a long time!
The mini-max is a super fun, super versatile little boat....