Personally, I hunt both private and public...Of course my private land holds more numbers of deer than most of the public land we hunt, but alot has to do with no traffic on private to a multitude of traffic on public. And I too have seen an increase of bowhunters in the past couple years in the public areas. Sounds to me that you have done pretty good for yourselves by getting the deer that you have out of public area, and yes most hunters can still see there truck from there spot.. Getting deeper is the key...I think that most stay closer because they want an easier drag if they do bag. About the only other options are to start knocking on doors and try and find that perfect piece of private that the landowner wants you to hunt. In this day and age, its getting tougher to find. Good luck this season.....