After some experience, I decided to try a Superflat Iron Golem farm like this. The idea is I'd make the Golem mad, he'd jump up on the wooden planks, then think the signs were solid so he'd jump on those. Fall into water, get pushed into a 3 deep well. Well, this Golem doesn't like water, and seems to know signs are non-solid. How should I get this to work?