Sam's first paragraph says it all, 'with experience and time'.
If you are out in the field, and pursuing game by a legal means, it is hunting, pure and simple, regardless of method, why do people have to whinge and moan.
Sitting behind a computer screen and criticising others legal methods...
Despite what people will say, if you are going hunting in wet conditions, you WILL get wet feet, pure and simple, anyone that says otherwise has never spent much time hunting in the wet, fact is, it is part of the game, period.