Check out the forums for demologists: that would be a lot more useful imo than using the search engine.
http://forums.ageofconan.com/forumdisplay.php?f=18
I have hide on all of my characters, but if you have a pet out it is a bit self defeating. The search option works better if you put a lot of points into it, but the person has to be pretty close in my experience for it to go off. I mostly use it for minis to find the hidees, sometimes in sieges to look for ninjatrebbers...but rarely in world pvp.
Hide is good for the melee ambushers since they get a bonus for attacking out of stealth. Frankly, throwing an aoe spell is going to work pretty good to pop them out of hide. And an aoe spell regens a lot faster than the search option.
I would put most of your skill points in more useful things. Fill out caster concentration, get 250 in climb if you don't want to have to jump off ledges at vistrix, I don't have any in the 'rest' feature things because I don't use 'rest'...its a pick and choose.
Hide is useful in some places like Chatha wing2, Yakmar if the raid leader wants you in hide and for getting through some pvp areas (without your pet out). I put a lot of points in hide and some in search.
Hide is good against guards, but a lot of mobs will pop you out even with a lot of points in it. It does make it less likely mobs will pop you out or that a player will pop you out. But not guaranteed if you put more points in it.