The average accoustic guitar strap doen't cater for the larger diameter end pin with a jack plug socket in the middle. You can open out the hole on the end of a standard strap, but the groove that it sits in, is shallower on this type of end pin, and it's not secure.
I have got a locking strap for my Tanglewood 12, but the lock doesn't close properly at the jack plug end, and the clip rubs on the underside of the heel on the upside.
What do other Mudcatters do to solve this problem?