Trying to call them to you is your best bet. Waiting on a coyote to pass through any one given area is not a good bet. Most predator distress calls on the market will work. I'd suggest keeping it simple and getting a closed reed call, or two. If you don't have any idea of what sounds you should be mimicing, I'd suggest buying a video, such as was mentioned above, and listen to the sounds and then try to reproduce them. You DON"T have to sound exactly like any one other person that calls predators, BUT you DO need to listen to the rythum and learn how to put some excitement into the sounds. That's all it takes.
If you are very limited to acreage, a set or two every couple of weeks is all you can do and expect to have action. Once you miss any particular coyote, that coyote becomes a little harder to call again. To do so, you'd need to change calling location, time of day, type of call, or any one of those ingredients. A decoy is not necassary. If you know someone that already knows how to call, invite them onto your property and learn from them, it will make the learning curve much shorter!
Howling works great, BUT it is also a method that if not done right, will not work at all. So I'd suggest leaving howling alone as a beginner!
Good Luck!