I always put hints on my own cache listings - I set the caches because I want people to find them!
With urban micros and other very public caches I always read the hint before attempting the cache, in order to be as inconspicuous as possible when searching.
With other caches, if I feel it's the right sort of area I'll search for up to half an hour before resorting to the hint, but if it's the sort of wooded area that Stokesy describes above then I'll read the hint before I start searching.
Slightly OT, but with my only puzzle cache I invite people to check the co-ords with me before setting out.
Do not go gentle into that good night.
Rage, rage against the dying of the light. (Dylan Thomas)