Just last Saturday, we logged our biggest day of 9 caches found. Friday, I mapped out 12 in the same general area, with a goal of getting a double digit find-count in one day. After 8 finds, one CAN'T FIND, one multi where the next point was out of our planned area, another multi that we bagged due to time, we decided to try the 9th (last planned) on the way home. It was 6:10 pm when we drove in the park. A sign said GATE LOCKED AT 7:00. We rushed in, did the ~1 mile hike, despite the 'BATTERIES LOW' message on the GPSr. Earlier in the day the batteries died, but I had extra batteries in my pocket. Doh, apparently I dropped one somewhere earlier, so I only had 1 to refresh the GPSr. That combo didnt last long, but died right when we found the cache. Later that night, I added a travel bug to my own cache, so technically, I did visit 10 caches/one day :-)