weezie

Here I am again, looking for more advice. I am practicing FMQ each day. On my practice sandwiches, I bring the bobbin thread up and stitch 3 or 4 stitches in place; if I cut the threads right away, the "knot" often disappears and my needle un-threads, so I sew several stitches along on my design and then cut the threads. When I get to the end of my design, I bring up my bobbin thread and sew a few stitches in place, then cut the thread close to the stitching. Here's my question: if I do this method on my quilt when and if I get skilled enough, are these threads secured enough to withstand years of use and laundering of the quilt, do you think or do you know? If you do not think so, please advise me as to what I should be doing instead. In the past, I have always hand tied the thread ends and buried them, but it is a lot of time-consuming work and I would like to avoid that if I can.

Thank you in advance for your help.