foresterpoole wrote:My personal policy: top the tanks off every time as long as weight and balance allow (which is always since I fly with my wife and my 4 year old at the most. Never trust the fuel gauges, stick the tanks! IPads are wonderful, but their GPS can be 20 feet plus off and can have erratic readings. Better to use them as a supplement to instruments, not a primary flight instrument.
A true fact. In the Army, we were taught the position was accurate to 20 meters! (close enough for a 155mm round). On a recent trail run, known to be 10 km, my wife's wrist Garmin logged 5.4 miles - 0.8 miles short! On short final and roundout, where inches count, very unreliable.