I have an EH3 mini-Mojo, not a Yard Hook, but the blade designs look very similar. Assuming they're the same, the end of the hook simply isn't shaped right for opening bottles; it's meant to guide a blade into the slot rather than to catch and hold the lip of a bottle cap. Short of filing/Dremeling the tip of your hook, then closing up the hook to spine gap a bit (which I imagine would take some pounding), I don't think you're going to have much success using your Yard Hook as a bottle opener. It wasn't worth it to me, but you may want to take a stab at it.