cougar FTD (currently advantage elite style hull) w/ 225opti. My boat is very heavily loaded with most storage in the bow area so that hurts efficiency. Im at ~ 3.1mpg @ WOT and can cruise around 3800rpms on smooth water in the high 4s. When my boat is not completely loaded for fishing it will run into the 5+ mpg range cruising. This is all with the smartcraft guage w/ GPS speeds.