Permatex 66B silicone adhesive is the only stuff we’ve found that sticks to the sheathing of the NeoPixel strips. This time around we found that the Powerbead can makes application a lot easier on the hands. You should do a test on your shoes to make sure it sticks to them too— wipe the surface of the soles with a alcohol first to remove any dust or residue. Likewise wipe the NeoPixel strip sheathing— clean surfaces adhere much better!
Wear gloves, protect your work surface, and work in a well-ventilated area— this stuff smells like salt & vinegar chips but after a while will make you dizzy from all the brain cells it’s killing if you don’t have proper ventilation.
Start with the inststep (and the input end of your NeoPixel strip), and carefully apply glue one section at a time. Use rubber bands to secure the strip to the shoe.
When you get to the end, fill the end of the sheathing with glue to keep moisture and dirt out.
Use a clean cloth and rubbing alcohol to clean up any excess glue, then let dry overnight.