ML, fishing pressure is a double edged sword.
One one hand pressure makes the fish harder to catch, which admittedly can be bad for novice fisherman.
On the other hand, rumors begin to get around that the pond is no good or fished out, which can be good, as most people are not that good of fishermen, especially freeloading neighbors.
A good fisherman will always catch his fair share and using advanced techniques, will become even better.