Im not too sure what you would move forward ?? if you move the hook forward you have to lengthen the pole… the 34″ height ? I take it you mean at the neck yoke ? It doesnt really matter.. within reason.. how high the pole is at the rear.. I might be wrong here but i think the further you move the point of hitching forward from the point the choker chain is on the arch , you will get less and not more lifting effect ??? Jason !!!! you out there ?? 🙂 …. John