Hey Czar,
I have been enjoying your script. One flaw I see is the pattern when shift-dropping fish. If you could modify this, I think it could really improve your ban rate.
At the moment, with shift drop, it drops from top to bottom row, left to right on every row. The timing between each drop is close to the same, and the script never misclicks.
Proposed improvement: Modify the drop pattern so it switches things up. Instead of left to right every time, sometimes it could go bottom to top. Also, instead of one perfectly timed click per square, you could move mouse down at a variable rate (maybe a sinusoidal function) and clicks rapidly. This would drop most of the fish in that row. Also allow the script to miss a fish (0-6)/inv and then go back and drop them after finishing the rest of the inv.
I don't have an extremely good understanding of how bot detection works, but this aspect of the script seems very botlike, and I think it can be improved.