4. Insert and lock the strap, string, or cable into the butt-plate.
5. Insert the strap, string, or cable into the throw-off and pull tight.
6. Tighten the screws, lock the strap, string, or cable into place, and tighten to taste.
The beauty of this method is leaving the throw-off in the on position when you put the snares on. There is plenty of room to drop the snares and plenty of room to tighten them when they stretch.
Whether you move the drum a lot or it stays in one place, leave the throw-off in the on position. The snares and bottom head are less likely to get damaged when the wires are tight against the head.