I actually have a different problem that prevents me from playing the fishing game. This is actually a recent issue for me that has just developed. I have developed a macular edema in my only good eye, and because of that, parts of my vision are simply blank spots I can't see anything in, and unfortunately, they reside near or around the center of my vision. Consequently, when the fishing bar moves, I will occasionally lose it in blind spots and have to scramble to try and find it again, then center it on the fish, only to lose it again as it falls out of my field of good vision.
This is especially frustrating because previos to being afflicted by this, fishing was one of my favorite activities in game, but now it has essentially become all but impossible, and I don't think I will be able to complete the community center bundles unless I cna manage to buy all of the fish that don't require a crab pot, as getting better rods with bigger bars won't actually resolve the problem of it vanishing into my blind spots.