Disclaimer! Installing a strap button on a Kala
acoustic UBass is best left to a
professional luthier or guitar tech!
If you decide to do it yourself be very careful.
You must drill a guide hole first to ensure that the wood won’t chip or crack.
If you have any doubts DO NOT try it, leave it to a professional!
I find that the position chosen in the pictures below works well for my needs.
There are other options too but
this is just right for me!