I think it takes a good combination of all three. If you have a prime piece of property but limited knowledge/skill, I think your success will be limited. You can control and improve your skill level but the land you have access to hunt is much harder to control. I know some areas of the country, private property is nearly impossible to come by. My success is better now than it was several years ago when I began bowhunting on National Forest lands. I now hunt private land almost exclusively but I do not think that is the only reason that I enjoy better success now. Deer populations are much higher now than they were when I first started and I don' t make as many mistakes as I did when I first started. I also work much harder during the offseason scouting, practicing and making sure my equipment is in good working order.