I like robobrainiac's post above. When I'm grouse hunting, dead birds go in those footwells for the rear seats like his pics show. It gets a bit warm, but no issues keeping them there (away from the dogs) until I get back to camp. If a guy drinks beer, it's also a great spot for empty beer cans (just sayin). And you have this storage on both sides and easily accessible with a 1000-5. Also easy for a cow dog to load up through either side door, which is faster to open/close compared to the rear tailgate. And for what its worth, I haul a lot of gravel, tree trimmings, bark, all kinds of stuff in the bed of my 1000-5 and the rear ROPS doesn't seem to get in the way. I have a chainsaw mounted back there on one side, and carry a shovel or rake or pitchfork on the other side. The chainsaw is protected by the ROPS when trail riding.
I could go on and on about the advantages of the five seater. You'll have lots of storage for your fencing gear and tags in those footwells straight from the factory...and the ability to add storage to the rear doors.