I found out that on other trips they do fish feeding. Learned from my friend that the new school of thought is that this is detrimental to wild animal behavior. He also said that he thought is was illegal in this area. Guess they have some sort of exemption. Regardless, I didn't really like the boat that much because it took so long to get there and I saw a bunch of other boats pass us. Later I drove to some of the other places and found a couple of shops that had nicer staff and seemed to be more my style. I'll try them out next time.