This was on Sunday, 3 people in boat + 1000lbs of lead surfing at just over 3K RPM's. On my XR7 my guess would be that it uses slightly less fuel than the H6 since its not working as hard. Either way sub 10 GPH is amazing. I definitely blow through most of my fuel cruising from spot on the delta to another 45 minutes of cruising each way is pretty common for us.