As for saving fuel costs....If it takes you 4 hours to mow diagonal and 4 hours to mow 50/50, or what some call two stripe, your fuel use will be the same. The savings comes from shortening your mow time. And, I have found, regardless of how we mow, there might not be a difference in mow time due to lots of variables...often related to golfers, weather conditions, mechanical issues, etc etc....