One of the best tools a knitter can have in her arsenal is the ability to knit back and forth without turning. In otherwords, the ability to knit backwards or left handed. I figured out how to do this a long time ago because I was too impatient to turn for bobbles, short rows and entrelac. Some of my knitter friends also figured out how to knit backwards as well and their methods are different from mine; you all know I'm from the school of "whatever works", so here's a little video that shows you how I do it. Try it and see if it works for you. If it doesn't, play around and see what you can do with your own style of knitting to make it work. It will rock your world.
This video shows a three stitch mini-bobble, but you can apply the technique to any number of stitches worked in garter stitch.