Calculating the required tank volume
For Example: Consumption is about .8-1 gpmile. The fuel tank is 100 US gal.
About 3200-3300 on plane at 24 kt. Had the transom mounts, gimbals and alpha #1 legs replaced which helped with the mileage. At 2200 off plane at 10 kt the mileage isn’t much better. On the Great Lakes on Lake St. Clair and up Huron or down Erie is a series of hops and here you need more range.
30 X 100 = 300 Miles on a single. I run appx 8-12gph unless pushing it up to about 57-59 mph running a storm. Then all bets are off, and it’s about 14gph. but easily run 8hrs at cruise safely with my 100gal tank. Never let it go below 1/4 tank. 8hrs, no issue. 3.5 hrs at cruise it will usually take 30gals unless a sheet of glass.