It's been said a couple of times before: All pools in TH form one big pool pool. Fish one empty and a random one out of all the ones in TH spawns. This means that if you run a limited loop, like this one, eventually you won't fish anything anymore unless someone else is in the area fishing the entire TH.
So besides the looting issue, I just came back to check on the bot to find it jumping up and down in the lava even though I have avoid lava set to true and I even walked it out of the lava 4 times and it just runs back into it. The fire pool I'm guessing it wanted to fish was like 5-10 yards away from where it kept running into the lava. I'd put it on ground and it just keep running back in and jumping up and down. lol :\