I think some of those bucks take a summer stroll and then return home. Same thing happens to me each year. Get a good deer on camera and flood the area trying to piece things together and never see anything of them again. I've had the same deer on separate cameras 3.5 miles apart in the summer. And neither places did he show on any cameras during the fall. Knowing there's still a chance at something like that will make it easy to get out of bed though.
Iím a great believer in luck, and I find the harder I work the more I have of it.