Then I tried taking one stitch at a time, moving the machine a small fraction with each stitch. That was better, but time consuming.
And now my new method, which I happened upon when reading an article by Kim Brunner. She does one stitch at a time, but pulls on the thread tails to move the fabric.
Here are pictures of the top
and the bottom
Much better than was I was getting before!
So, a really big thank you to Kim Brunner! She is an excellent teacher and I highly recommend her 'Machine Quilting with Templates' class through Blueprint.com.
I hope you give the lock stitch technique a try, and check out Kim's class.
Happy Quilting!