Hello, My son and i have been fishing tournaments out here in Vegas from a Sea-Ray 180. Well fishing from a family boat don't work. So i bought a 1993 Champion 20'3" (203?) with a 200 mercury xri. Never owned a bass boat before let alone something that will go faster than 40mph. Any opinions or suggestions as to what octane fuel, oil and other additives i should use as well as maintenance would be much appreciated.