I have found a board to help me tie back onto the loom without losing a lot of yardage. I wove about an inch and a half, inserted this board into a plain weave shed and then wove an inch or two. I have secured it to the apron rod and now I am ready to start weaving again and I have only lost a few inches.
I sometimes forget this way of tying back on, but remembered this time. By doing it this way, I have kept a nice tension on the warp.