I trailer so I never need to buy fuel on the water. 89 octane is what my MCX calls for, so that's what it gets. What does your 6.0 Illmor call for? For engines that only require 89, you would be wasting money using super.
I usually take 4-5 riders with me, $20 per person for 2 sets so my boat fuel is usually paid for.
This is far better than years ago when I had a Formula 303 with twin 502's, 125 gal tank that I had to fill each time myself! Gotta love wakeboarding!
I don't drink beer on my own boat since I'm the driver 90% of the time, so nobody brings beer for me as fuel payment.
I feel sorry for you canadians that pay big bucks for gas. Better get your buddies to chip in big time!
I was njskier on here.