Dave's first suggestion only works if you dont' want to plug in!
I've got a tapastring on the endpin of my Taylor, and it's solid - too solid, in that I can't get it off easily, the strap is always on my guitar now, have to fold it in place over the strings when I put it in the case. There's only one tapastring per 'kit', so if you want to ensure lock on the other pin, you'll need 2.
I don't trust myself to drill into this guitar (the way I did with my tele) to put real straploks in it, but when/if I ever take it to a store for a setup, I'll have them install them, with the end one just behind the jack pin.