I've always felt the fishing should have a chance at skilling up whenever you had to put an input for the mini-game on top of when you reel in. Before the change to fishing you could get to about 1/2 stamina and still be able to pull in the fish with less likelihood of your line or rod breaking, but now if you try that you're almost guaranteed to snap them. It's a different kind of craft, but the food to help skill it up is locked behind an event wall or if you have the Lu Shang to do RoV quests (Which if you already had it, then most fishing would be way easier anyway). But then that poses a different problem, do you focus on the Moat Carp to finish said quest and blow all 200 fish on that or try to get some skillups? Either way, I've never been a fan of how harvesting crafts were treated in this game (limits/fatigue/etc.). But those are just my feelings.