The attached file contains the method I used to install a TWA on a Taylor GS Mini. It's strong and leaves no marks on the back. Bonus: It's mounted in a 'normal' position.
This is a great tip on a GS Mini or other smaller, arched back guitar. Much appreciated, Russell!
Russell, You're a life saver! I'm staring at my custom Taylor GS Mini and thinking I wasted my money on the Pick-up and extra mounting crossbar - Your description and visual aid are awesome! I just ordered my 120 pack of Magnets on Amazon, same size, type ( like I need 120 magnets) Thanks very much for helping us GS Mini brothers & sisters on this.
Thank You! Glad you found it useful.