Sometimes I will use one thread overall, especially a multicolored thread, which avoids the problem. Sometimes I use a unobtrusive color, like a mild grey to stitch in the ditch to make a gridwork across the whole quilt. I was taught to pull the bobbin thread up , cut both long then go back later to tie those threads and embed the ends. On my guild's long arm, the suggestion is to stitch 3 stitches in one place, cut, then go back later and cut the threads off even with the fabric. On my home machine, what I generally do is take 2 stitches at the end, use the thread cutter on my Janome, which leaves 3/8" thread ends on the back, then later I cut those off. BTW one of the reasons I use the SitD grid quilting is to make my fancier free motion quilting easier, with fewer pins in the way.
There is a lot of difference of opinion on this subject, but I dislike burying thread ends and do get plenty of blue ribbons with the methods I employ.
Last edited by QM; 08-11-2012 at 12:04 AM.