Precisely. Trickery aside, the best way to interrupt using Kick is to always make sure you've got enough energy when the time comes. There are addons out there that will put an Icon for different class skills with either a timer or bar to count down when it's ready again, but you can just watch your cast bar. For example on Freya trash, it's my role to interrupt the Ents and not let them cast Hurricane. Their Hurricane is on a 10s CD, and so is my Kick. I just need to watch Kick, and when it's near the end of its CD, make sure there's a bit of yellow mana to spare when it's off CD.

To go along with that a bit.. if you're in a raid of anything more than meager competence feint should not be used as threat reduction. The amount of threat dumped is still made up in one or two skills and with vanish, tricks, evasion, dismantle and whatever else a tank will pick it up before I'm blowing energy on feint if I'm on the correct target. In a pug I can understand if you're reluctant to rely on your fellow raid members but in a guild setting a rogue needs time on target and to go all out while on said target. When I moved to a hardcore raiding guild 6 months ago roughly I was amazed how aggressively they started nuking targets.