My E22 is pretty close to the chart. The gas guage went out 3 years ago, and I allow 4 gph. We live around 3,000 RPMs with wakeboarders and its tough on a rough lake to do much more than that just running around unless its a weekday with light winds. I try to fill up before I put 6 hours on the engine, but I have pushed 6 before and never put in over 22 gallons. We carry up to 7 or 8 people, but no ballast and its a smaller boat the the SX.