Sorry...just seeing this. We have a condo right at the north turn of the race course and got to enjoy the races again this year. Now back in the cold north. Where did you anchor overnight?
This reminded me of a time I was at the race track and the newbie next to me was bleeding his brakes by himself using the "Pump the Brake Pedal Method". I was watching and he would crack the bleeder then jump in the seat and "Pump the Brakes". I stopped what I was doing and asked what he was...
Use Marvel Mystery Oil. Like above said...pull plugs and put a little down each cylinder. It works.
You're going to want to drain the carb bowls too.
Good Luck,
Sidney