All jinchuurikis can get trapped in any regular genjutsu, its just that the bijuu breaks them out of it after a few seconds. Same would happen with KA. The only way to really trap them is to trap the bijuu in genjutsu and also trap the jinchuuriki in genjutsu.
Not on perfect jinchuuriki, like BM Naruto, Bee, or Yagura.
I think kotoamatsukami is some kind of an ultimate genjutsu...so simply breaking chakra flow by using a the beast sealed inside shouldn't work.....