You can very easily do a professional quality job yourself, but you must bear in mind a few important points. The type of antifouling you choose should be tailored both to your boating style and to the fouling challenges in your area. Different water qualities and temperatures produce different types and breeds of fouling. Even in a small area the differences can be quite dramatic; affected by outfalls, pollution, inflows from rivers and streams, the speed of flow of the water, tidal exchange, salinity and even shading from cliffs, trees and buildings.