I have had the discussion with several people I fish with, and since I am rarely driving,may not be the best to comment on.Does using just one bag, or using different size bags affect your ability to control the boat? One guy I fish with often uses one big bag and another will take one bag out of water if going into wind.Still another stubborn older captain insists that you have to run two bags of the same size to maintain a straight course while trolling.I would think,the slower you go the less the affect the single bag will have on the control.