The two man stand I have (River's Edge Double Buck X-tream) you can flip up the rail. But I leave it down if I bow hunt out of it alone. This is because I flip up the seat the platform is so big that don't hit it. If you are actually hunting with two people I would flip the rail up.
If you are hunting with two people in the same tree put another separate portable up just above it. Works alot better than a two man stand. Good luck!