When I bury the tails, it is usually after I finsihed it not started it. I'll look at the nasty little threads on my pretty quilt, terrified to cut them off for fear it will unravel the whole thing. Burying threads means to me, catching that short thread that is ruining the clean look of my project and brining it back into the gutter. Not to sound like I am trying to push my invention, but one of the main uses for my side threading needle is it is easy to catch those threads and simply sew them into the gutter. Spiral eye needles have a small slot ont he side of the eye, this makes it easy to thread, even in tight spots.