Some good tips here - the keys are observation, perseverance, and training yourself to think outside the square. Also of assistance, read the cache description (been there, done that!
), the hint, and logs if you're getting stuck. Try approaching GZ from different directions. Keep and open mind - the most obvious hide isn't always the right one. Don't trust your GPS 100% - plenty of time bad reception, cumulative errors/inaccuracies can put you well off target. Experience and practice - but even then there are some caches that just never work for you - I've a few nemeses that no matter how I tried I couldn't find them while others post those annoying Easy Find logs same day (luckily at least one have been archived!
) If you're really stuck - contact the cache owner or even other cachers who've found it - sometimes they can give a crucial clue to get you on track. But stick it out - there's a good feeling you get after cracking those troublesome caches