Kenai Watershed Forum and the Kenaitze Indian Tribe operated a grant program where a boater received a $500 certificate towards a new 4 stroke motor in exchange for a 2 stroke motor. The problem is older, 2 stroke motors, and the solution should be moving boaters to use the less polluting 4 stroke motors. 

Going online to get a 10 percent discount at Sportsman's Warehouse gets the consumer a 10 percent discount to Sportsman's Warehouse - it does nothing to get the consumer to switch to a 4 stroke motor. 

2 stroke motors are banned on the Kenai River - and the hydrocarbon pollution issue went away.