Sorry for the delay in answering, I never imagined that guys would be this interested. First thing I would ask is YOU HAVEN'T HEARD OF THE MOON GUIDE????? I absolutely will not plan a hunt without it. I am from Michigan and you can buy these in just about any sporting goods store, I happen to buy this one in Jay's. Where to start. I picked up Jeff Murrays book "Moon Struck, hunting strategies that revolve around the moon". Myles Keller co-authored the book. I have read this book 5 times and I have been implementing these moon strategies for many years, I can say that they flat out work. The moon guide is a circular wheel type device that has the hunting months of the year with the days printed on it. You slide the dial which has an opening on it to the date that you plan to hunt and the best time to hunt appears in the window. It also tells you whether you should be hunting bedding areas, feeding areas or transition zones. The basic theory is that (and this is really simplifying here) the best times to hunt are when the moon is at it's peak overhead and at the times when the moon is directly below you regardless of the phase of the moon. There is also alot to know about the phases of the moon as they pertain to feeding but also the rut. The very best time to hunt is during a 1st or last quarter moon when it is directly above. These moon times change by 51 minutes each day, for example if on Oct 3 the best moon time is 8:00 am, Oct. 4ths moon time would be 8:51 am. Basically 12 hours after the moon time, the moon is directly below your position on the earth and is also a great time to hunt as the moon's position has an effect on ungulates feeding. These moon times also work for fishing and other prey animals but especially ungulates. When I began using the moon guide, I was met with a whole lot of skepticism so I would write down the moon times at gun camp and tell the other 6 hunters to pay attention to when you see deer movement. When we would return to camp after a hunt, I would ask the hunters when they had seen their deer. It was shocking to see that all of the deer were seen close to the same time and when I showed the moon time that I had written down, they all became believers in a big way. There is alot to this and I could sit and write a book based on my success by using the moon guide. I have been hunting exactly 30 years and the Doe that I killed last night was my 87th deer 39th with a bow. I am fairly experienced and am always studying new ways to hunt. When calling was first being utilized, I dove head first into that tactic and had great success with that also but if I could only have one tool, it would be the moon guide. I have gotten to the point that I no longer really need to rely on the moon guide as I have been using one so long and have read Jeff's book so many times that it has become second nature. It is nice to have the guide so that I can quickly roll the wheel to the date and be able to tell whether or not I should hunt mornings or evenings and where. Further proof of it's accuracy is that this morning I went out and saw nothing but bedded deer as the prevailing moon time is an afternoon time right now. There are factors that can influence deer and make them move at times other than the moon times but I assure you that if you pick up and correctly use a moon guide, you will be amazed at how accurate these are.