Yes, that guy whose videos we spoke of earlier: I got a tuna without bait and wasn't on the pier (in fairness I was to the left of it). I would just take advice as a guideline or suggestion.
Then again, the same guy hyped up a "tarantula island" when the reality is you have to keep scaring off fish and insects and there's still so much waiting to do for all but one to appear.
They are super easy to catch though: creeping up until close to swipe or until they jump, or digging 4 holes to seek refuge in by jumping in the middle of, where you can easily net them. I personally don't have the patience and will gladly get back to lapping around my island that I've got it set up pretty well for now.
I have an obnoxious bear I'm regretting inviting to stay, but that's enough about my domestic situation.