Depending on the terrain, the GPS will only get you close to the cache. Due to satellites being located and lost by your GPS it will change your coordinates slightly. That is why the GPS says the cache is in a different location even though you do no move. This is especially true if you are in a wooded area because the tree cover makes it hard for the GPS to get the signals from the satellites. I use a Garmin 76CS and the accuracy of it is anywhere from 9 feet to over 50 feet depending on where we are. Also, the coordinates can be off slightly depending on how accurate the GPS of the person that placed that cache was at placement. Sometimes we are within a foot or two to the cache, but we have also been up to 50 feet away. The best way to locate the cache I find depends on the type of cache (i.e. ammo box, tupperware or micro). After the GPS gets you close to the area then you just need to start searching. When you are looking around, check for areas that look out of place (i.e. if in a wood area look at stumps, holes in logs and sticks or bark that is piled up). After finding a few caches you will get a better idea what to look for. Also, make sure you read the cache page to see if there are any hints and read the old logs to make sure others are finding the cache. We used to print pages of the caches we were looking for and take that with us. But we have gone to paperless caching, which is loading the cache pages into a palm pilot so we can look at the page when we are at the site of the cache. We find that this help us. I hope this information can help you find some caches. We have been caching for 4 years now and really enjoy it. There are many different type of caches people hide, some are very hard to locate and others are real easy. Just keep trying and you will eventually find one. Good Luck.