Can a little Sail boat pull a long tail? A heavy payload? A normal back steering with a classical rudder is not efficient no more when pulling a long heavy load -> What about a front steering? Would it help? The answer is : YES!
Maybe the front steering could be even do better in addition to a classical back steering...
Or what if the whole shape of the propulsion head was steering the tail... What if the whole boat was a directional device... See Protei-002