There a a few rules to follow that will consistently put you in the right place at the right time.
1) Hunt where there could be arrowheads. This means learn to predict where Indians lived and hunted. Click here to see a map of a mythical valley full of Indian sites.
2) Understand land surfaces. The soil of our planet is flowing over the surface of the land much as rainwater flows towards the rivers. You must understand how this happens in order to know where arrowheads might be on the surface. There are many places where Indians once lived that are covered by several feet of soil. There are also many places where Indians once lived where the surface including the arrowheads has been completely washed away.
3) Hunt only those areas that have surfaces already exposed by erosion, farming or construction. This is really obvious, but should be said. Even a thin layer of leaves or dry dust can cover ALL of the artifacts.
4) Hunt freshly disturbed dirt ONLY after sufficient rainfall. It takes alot of water to wash artifacts from soil. This means at least 3 inches or so of rain on a given spot, and this much if it comes quickly. It is a waste of time to go out to an area you suspect of being good if there has not been sufficient rain since it was plowed or bulldozed.
5) If possible go immediately after a good rain. In most areas, moist soil is a different color from the artifacts it contains, but by the time it dries out, everthing is about the same color. The dry soil makes it much more difficult to spot artifacts on the surface.
6) Look very carefully once evidence of occupation is spotted. Every piece of stone on the surface should be examined if it looks as though it has been worked. Many collectors carry a stick with a small hook on the end to help examine flakes without bending over.
7) ALWAYS hunt the best areas first.