As an experienced keeper, ive been called a few times on the 6 second rule. Most refs don't know this rule but will just warn you. However i've been called without warning before. Im not gonna stand in the box and count. I have also been called on it because I was on the ground for awhile waiting for a pile to clear and time I stood up I was called. That's an example of a misinterpretation from the ref. Ball placement is a different story. The ball is supposed to be placed outside of the 18 for an indirect freekick. But i've seen it called anywhere from a direct freekick outside the 18 to a indirect right inside of the 18 where the keeper was standing to a pk. Refs need to be more educated on this rule