I own a couple of tripods, a heavy duty SLIK PRO 500DX and a quite recent addition to the inventory a smaller, light weight Fotopro FPH-53P both units come with the convenience of a quick-release plate. The SLIK PRO being bigger and a lot more robust comes with a proportionately bigger quick-release plate that’s also easier to tighten. The Fotopro on the other hand is smaller and like most smaller QR plates, the screw head is slotted so you can additionally tighten it an extra notch or two using a coin or a flat head screw driver. The problem is there had been times when I neither had a coin nor any type of screw driver with me during a shoot so at inopportune times when I really needed to tighten the plate it can be super annoying to have to deal with an attachment that requires periodic re-tightening throughout the shoot.
The though of drilling a hole in a coin had crossed my mind but at the same time questioned the legality of doing something like that. Thankfully this copper piece with a punched tip saved the day.