Owners or operators of motorized watercraft required to purchase an Aquatic Invasive Species Program Decal shall display the decal on the starboard (right) side of the bow six (6) inches left of and directly in line with the watercraft registration decal. Non-motorized watercraft owners or operators shall display the decal on the bow in such a manner that the decal shall be visible when the watercraft is underway. Only the Aquatic Invasive Species Program Decal which is currently valid shall be displayed.