Anyone have any Pinewood Derby tips/tricks?

Install one of the rear wheels higher in the car body. The car will roll on 3 instead of 4 wheels and reduce your rolling resistance by 25%. Also, if your track has pegs for starters, you can shape the underside of the car from the nose to the front axles with a radius so that your car moves forward before the other ones do. You will get a jump and the other cars won't catch up. As the starter pin or dowel folds down, the car moves foreward because of the radius under the nose. This car was designed and built by my oldest son for the "sibling race". He won that race, best engineered, and fastest overall. It is painted with Duplicolor Mirage that looks like DuPont Chromalusion. Mike