I found out that if I sewed a little more slowly, I could get into a rhythm of moving one hand into the next position, then the other. There's a lot to think about and coordinate, though, isn't there! :D I can't even walk and chew gum at the same time, so this has been quite an experience!
I pull up the bottom thread, sew eight or ten tiny little stitches really close together in the direction opposite of the one that the line will go in, then I come back along that same line, snip the thread ends when they're clear and continue sewing. No knots and it will take a VERY long time for that sewing will work itself free. :)