About 30% planned 70% hunt on the fly. I find that I stress out before the hunt more when I hunt on the fly (just the fact of not knowing) , but I have more fun and success once I get there. I think there are too many variables to do a fully planned hunt. Plus plans very rarely stay in tact and that just stresses me out. (yes I'm they type that runs on a schedule in my daily life)
As I hunt with my 15yr old son more and more, I've learned just to have fun and hunt on the fly. Makes for a better trip all around.