Merlin says:
Yes I have a little key saying they are 5' squares.
Oops! Yeah, I see the key now. Sorry 'bout that! And it's my monitor's fault: I was only seeing the big squares and not the small ones, which made me wonder how F,A, and S2 were all sharing the same space.
SO now that that's cleared up it looks like there's nothing Rufio can do but Dash.