Something I have always wondered....Chum is a brutally easy effect. Far to simple for it not to be working. I know the default position when an effect is not working is that TDO is the devil and they will not fix it because it would take away from the money the use to kick puppies and all, but maybe there is another reason we are not aware of that it is not working. Could it be something as stupid as it was too close to the ride vehicles or its system was messing with something else?
Perhaps. It was indeed a good effect when it worked.
I'm fairly certain the issue with the shark (I thought Chum was the hammerhead not the thin shark I'm talking about) was that it frightened too many kids so they toned down the movement.
Ah, the Alien Encounter problem. Maybe.