Originally Posted by Inverse
So long as the sign is a valid prop pertaining to a character costume and not an advertisement of some kind it should be fine. A friend of mine cosplayed Genma last year who had various wooden signs which the character uses and it was deemed acceptable.
What she said. The "sign" rule is generally more towards people who hold advertisements or "kiss for yaoi" or whatever, I believe.
And the height is fine. There's a requirement of it being shorter than I think 7 feet. I've brought a scythe about 6 feet high and wasn't bothered. Usually they post the height requirement on the weapons policy but I just skimmed it and couldn't find it..haha.