Drawbridge Technique: Legal or not?

[EricH]

Generally true. Yet I’ve seen Eric post elsewhere that he does ref, and I’ve also seen the Q&A rule that demonstration to a ref before a match is definitely helpful in convincing the refs of something that may not be obvious. I think a specific Q&A for this year surrounding this issue would allow this scenario to play out.

You mean like 765. Which, answered, invokes 505.

And, just to be clear: I am signed up as a ref. For two events. (I could do three, but the third one I prefer to avoid reffing whenever possible.)