I usually hide well before the pull when I know I want to use Sneak/Trick attack. The only downside is that if the tank pulls the mob far from your current location, you have to creep over there lol.

One thing I noticed on accident: When you use Shikuchi it LOOKS like you can immediately cast Hide with delay. Going to experiment with this when I get home to see if you can Shikuchi to position after the pull and immediately Hide without being seen. I would feel sooooo much like a ninja if this works. Has anyone already tried it?