Summon crabber is so whimsical and silly that it's impossible not to love! A smile grew across my face as I saw that concept art. I like the idea of the magic arrow too! I'm sure there's many more ideas you could come up with which would be really cool to see!
As for the suggestion, you hit the nail right on the head! As I was playing, I noticed I was struggling to get to the lower fish at the start, but reeling back up was much quicker. I think allowing the hook to sink quickly and then pull it up to where you want might make initial catches a little easier. Thank you for taking the time to respond!