You got all the great advice. I don'tuse any special threads or wax. I just use a thread to match andit's usually a cotton quilting thread. I do keep my length to the18” or less rule and I like the idea of threading up severalneedles at a time so you can just zip along. What a great idea! Oh,and I always use single strand, never double. To hide the knot I gointo the raw quit edge from the back (side near the front sewn downbinding) so that when I pull it, it the tail goes up in there and iseasier to tuck in. Just make sure your tail isn't too long either. No need for that. Just long enough so your knot doesn't undo butshort enough to fit in without it sticking out.
Hope this onemore opinion helped!