Secret Pond And Rod
Double tap the lighthouse, look by the pine trees for a flashing light. Press it and it will say old pond it's not the same as the other old pond. It should have ducks when in a "V" hit male ducks, then the females then hit change location. You should get the blue and white secret rod. Hope it works for you thanks if not leave me a comment and I will see if I can help!
Reel In Faster
Put both of your fingers on the reel and reel in with both of your fingers.
When using bobber, after you cast, reel in a few feet and then let go, and a fish will be on the hook.
Line Tension Trick
First go to your fishing hole that you want. Cast your rod as normal and when you get a bite select change location (quickly) - it's in the pause menu. Then go to the old pond and cast then you will notice your pervious fish is still on your hook. Note you will still have a tension bar but it won't be tension like the waves of doom; it's the old pond and it may grow a lil hope it works for you.