I usually hook em on the tail, but haven't tried it on the K9's, only K11. I would worry a bit about killing the action on the smaller plug with the extra weight/resistance on the tail. Unconfirmed theory on that one. K11's still run pretty nice with a short bead chain.
The Rvrfshr sickle siwash work really well in this application. I switched all of my single hook plugs to the sickles and won't use another siwash on a plug if I can help it. Now if they only made bigger sizes for the larger quickies, ahem, Todd. Had to use Matzuo's for the big dudes.
I am still not a cop. EZ Thread Yarn Balls
"I don't care how you catch them, as long as you treat them well and with respect." Lani Waller in "A Steelheader's Way."