I'll add to this. I have never found the "truely hidden" factor to be
dependent on the level of the mob, when I hid they all seem to turn
indifferent. But what I have found to work is this. Target something in
the zone that cons anything EXCEPT indifferent. Then hit the hide button.
If you are successfull the con on the mob will turn to indifferent.

>From: <kim@...>
>
>On Fri, 21 Jan 2000, Kenneth E. Bachman wrote:
>>
>> 3) What does it mean to have a lower/higher Hide skill level? It
>> *appears* to work perfectly each time. I hit the button, I disappear.
>> Does skill level determine the length of time that it works? Or whether
>> the MOBs can see you anyway? Or anything else at all?
>
>I think your skill level just determines your chance of
>success. Whether or not you're really hidden seem to depend
>on the level of the mob and a random factor. I've succeeded
>at hiding, had a green mob turn indifferent while a blue one
>was still amiable. I then hid again and both were
>indifferent.
>
>You will always disappear from your POV while using this
>skill, whether it succeeds or fails.