You probably got lucky. I wouldn't count on that happening too often.

Find what they are feeding on, then back-track the trails that lead away from the food source. If you start to lose a trail, or they start to break into several small ones, set up right there and hunt that spot. If it's not the right spot, watch where the deer come from and adjust accordingly. If hunting there is anything like it is here, deer change bedding area's often depending on food and hunting pressure. So, don't worry about finding where they always bed, such an area may not exist. Find where they are bedding in relation to what they are feeding on.

If you are lucky enough to have a place that isn't so heavily pressured that bedding area's can be predicted, it's easier. Just take a map, plot the food source as point A, bedding area as point B, and locate stand sites that allow you to hunt with different wind directions. You will likely need somewhat different routes for morning or evening stands, just look at your map and see which one allows you to hunt without the wind blowing in the direction the deer are coming from. I make up index cards labeled with different wind directions, and put the stands I can hunt for each wind direction on the cooresponding card. That way, all you need to do is check the wind, then pick a stand off the card for that wind. Keeps the tempation of hunting the favorite stand on the wrong wind a little lower.

As for crossing trails, I keep that to a minimum, but when I do have to cross a trail, I do it in my shooting lane. Step in a pile of droppings on the way in, then where you cross the trail, rub the boot with the droppings on it into the dirt. Any deer coming will stop for a sniff, and you might get a standing shot. Sometimes you cannot get into a stand without crossing a trail. This way, they will either smell you and become alert, or smell the droppings and think nothing of it. Either way, you get a standing shot rather than a walking one.

Most of all don't worry yourself to death about it. Try different things. Some will work, some will not. Learn from your mistakes and become a better hunter.