I am pretty much done fishing until probably February, I currently have about 1/2 a tank of gas in the boat and it was treated with stabil and ring free when put in. I know back when I had my last boat, 1999 you just filled the tanks to the top and added the stabil. Not sure what to do with the ethanol gas, please help. BTW I have a 2017 Skeeter ZX 250/ Yamaha SHO with 21 hrs on motor. Thank you