Ok what you do for this money play is...WR Screen
but you have to hot route the running back(or full back which ever one is there) on a drag route going the direction of the screen.
this works because the man covering the screen if there is one there cant cover both that out going flat route and the screen... it helps alot to have good quarter back but it works with bad ones too but takes away 100% chance success to like 90% chance success