>>29071419"Fishing near rocks and other impassable spaces (not including spaces occupied by Trainers) will raise the chances of hooking Pokémon. The more sides (north, south, east, or west) around the space where the bobber lands that are blocked by such obstacles, the higher the chances of hooking a Pokémon are. A space of land may also count as an obstacle on one side of the bobber, so long as it is not the only one. If three sides are blocked, every cast will hook a Pokémon."
