djeffcoat

Pinegrove Leather in Engleand sells something close to the StrapKeeper. You get 2 in a pack for about the same price with overseas shipping. They use a rubber washer over the endpin to hold it in place. I have both and both work well. https://www.pinegroveleather.com/guitar-accessories/guitar-strap-jack-endpin-adaptor

This is the gadget that some swear by. http://tonerite.com/guitar/vmchk DJ