when I was a kid in high school, the jr ROTC unit I was in had at one time done compass work on the drivers ed course with the cadets under a refrigerator box.

they had to stop the year before I got there due to the needs of the the driver ed classes. it was just in use too much.

I was told by some of the older cadets that had actually gone thru it that some people got to the point where they could reliably get within ten feet of where they were headed with a course they were given hand written on a piece of paper and a flashlight to read the course with.

Others were lucky to get within 50 feet. The biggest problem seemed to be that very few people have consistent paces. Keeping a straight course is not real hard, but keeping your paces consistent is all but impossible without a lot of practice, and even then it is not real easy.