I dropped my Les Paul from playing height onto my concrete floor. I immediately went to the computer and ordered straplocks online. My new Fender actually came with straplocks and a leather strap. Fancy.
I have troubles with the straplocks though...over time, the U-shaped clasp slowly rotates and ends up upside down, making it almost useless. Most of the time I catch it before it gets too far, reposition it, and tighten the nut back down. But sometimes I don't catch it, and I've dropped my guitar more times since installing straplocks than ever before. Fortunately I've caught it every time other than that first disastrous drop (the plastic jack plate shattered and saved the instrument).