I have one of the Casio Pathfinder watches and it's amazing how accurate it is at telling you when the animals are going to be up and moving..
I was one of those that wanted to know when the cycles and times were with the phases of the moon. But it seemed complicated and wasn't sure how it worked.
I bought the watch, which is a great watch to begin with, but it tells me the best time of the day to get out there and hunt. There are typically 4 times of the day that are the best to get out there and hunt (2 short periods and 2 longer). During the summer I was out in the woods for about 3 weeks total time and when ever I saw the animals up moving and the fish biting, i would look at the watch and every single time it was right on the money of when the watch said they would be.
I don't schedule my hunt times around the moon, or the time of day, I am not going to hunt around the watch.. I just don't get that much time where I can get out there and hunt (in my opinion, not my wifes) but will hunt when i can.
I think that typically the morning and evening are the best times. but there are times where you can and will call them in during the middle of the day.
But this comes down to knowing if they are up and moving vs. bedded down. Knowing this, and where they will be for each of these things, will make you more successful. I say that because, if you know they are going to be taking a 4 hour nap, you can get out there and quietly walk in from the roads to the area's that are lower and wooded. Get to within 100-150 meters of the tree lines, and face those tree's and call. Start with an interogation howl to get the sleeping dogs to wake up, and hit then hit them with the rabbit. Even if they were sleeping you can wake them up and get them to move to eat, especially if it's a close meal.
During the hunting times, that is when you are going to need to figure out where do they go to mouse and eat? And then find the paths they are going to take after that to get back to the bedding area's.
As for the watch, I will hunt when I can, but you better know it, I am going to hunt a bit harder and make sure I am calling during the prime times (when I am out there). But also calling bedding area's when it's not the prime time.
One of the nice things about the watch (once you get it set) is that you can forward the calendar to this weekend and find out when the best time is going to be for Saterday, so that I can start coming up with a plan.
Sometimes, some of the best hunting you can do is just research. If you know that from 8-10am is prime hunting, but then they are going to bed from 10-2 pm, you can head out on Friday Night and drive around in your truck at night with a howler or siren, and call from the roads during what is supposed to be the bed time the night or two before. When you hear a response mark it on the Map or GPS, Then you know where they are when they are sleeping. When you come back on Saterday you can look around the area for the hunting lands, (if you are there during the hunting times) but you will now know what to look for in the area's where you heard the howls (during the bedding time) and can look for bedding area's to call, during the off times of the day, to be able to have all day long success.
Good luck, and of course this is just my opinion, take it for what it's worth (free) lol