the Blakey's, aka. Heel Clickers were issued to us in D&C 2004, Vernon *Thank-you to all the D&C WO's for making this possible* we had to pay $.50 per boot to have it put on. (Courtesy of our Platoon WO's and other platoon members to cover the cost of the clickers.)
If you do nail them in yourself, dont nail them into the little holes in the heel of the boot, it messes the boots up, those holes (on the heel) are were they nail the heel into the boot.
You can pick up the nails at your hardware store, if i remember right they were about a half inch long and had a round head, like a finishing nail. not sure maybe someone can refresh my memory
as far as rules,
Your Not allowed to wear them when traveling on an airplane, so take them of prior to going to camp or the like
goes with the bus as well, they might tolerate it at your local HQ dependin on your circumstances (ask), but they Wont tolerate it when going to and from camp
If your corps has a wooden floor for a parade square, your also not allowed to wear them as they will scuff and dent the floor, as long as its Cement or Asphault your parading on, your ok