I finally found a nice boat at a great price on Craig's List. It is a 16'3" Vermont Canoe Encore tandem  :dankk2in kevlar. I plan to replace the rear thwart with a kneeling twart. Would it be overkill to move the old rear thwart to the front? I have seen 16' foot boats with and without a bow twart. I will be car topping the boat on the highway alot so I was assuming the extra thwart would help the boat. I am also planning to add a sliding bow seat so the weight of the boat is increasing - I will not do it if it will not help. Thanks for any input.