Here a 2 links to show you how to do the "international stitch" for tying quilts. It is really easy, goes fast, and you don't have to tie any knots. I have made a lot of quilts for charity using this stitch. I usually mark the quilt about 3" apart, use a doll making needle (long) and crochet cotton. This holds up extremely well in lots of washings and tough love.
http://www.quilt.com/QuestionOfTheWeek/1999/1018.html
http://www.creationsbykara.com/2010/...ed-quilt.html/