Autofish mod 1.8, 1.7.10, 1.7.2 automatically reel in and recast your fishing rod when you catch a fish. You can disable it using it's GUI, which opens using a configurable key. Just cast the fishing rod one time into the water and let the mod do the rest.

Download Autofish Mod 1.8, 1.7.10, 1.7.2