[PaleMelanesian]

Instant mpg is useful for a short while when you first start, but you quickly learn the relationship between pedal position and mpg. Then it's just foot memory.

Average mpg is where the strategy comes in. The trick is to keep it ratcheting up. If you have a hill to climb, note the average when you start. Make the average higher when you finish coming back down the hill. For pulse and glide, make every glide end with a higher average than the previous. If it's not, figure out what you need to change to make it be higher (lighter pulse / heavier pulse for shorter time / longer glide / adjust speed / pulse up the hill or down / ...).

That was what kicked me the last step up to 80 mpg tanks last summer.