[Gdeaver]

Note the accuracy in the data sheet. Don't confuse resolution and accuracy. I've been playing with a PNI compass board. I I've got it working to with in 1deg accuracy. However to get this accuracy the are only 2 readings per second. They're slow devices. Enable the set reset register. The board has to be at least 1.5 away from any motors or solenoids. The more the better.
1 degree of error over the length of a playing field is allot. It may have it's uses.