If you happen to lose sight of an airplane and have some altitude sometimes inducing a stable spin is helpful(power off and sticks in the lower corners). At times the spin helped regain sight of the plane, at the least you know it is going mainly straight down and not off to hit a house a mile away. I've picked up planes that were put into a flat spin and glued the damage and was flying again in a half hour.

Good sunglasses help a bunch as does flying closer to the field.