In case anyone's interested, those home drilled studs all utterly failed within a couple of light CX training sessions. The rubber is just too soft a substrate.
How about using something with a flange and fitting it from inside the shoe so that the flange sits directly underneath the insole. A Tee- nut without the prongs would do the job.
In case anyone's interested, those home drilled studs all utterly failed within a couple of light CX training sessions. The rubber is just too soft a substrate.