By "maximizing" I would suggest that it means not having to share with others (especially fisherpersons). Some birders want to see the maximum number of birds (undisturbed), some divers (Jennings etc) want to see the maximum number of fish that a habitat can sustain. Equate "maximize" with "selfish."
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Remember to immediately record your catch or you may become the catch!

It's the person who has done nothing who is sure nothing can be done. (Ewing)