Skip the velcro strips
The Stage Trix pedal fasteners make it so easy to add hooks to pedals - and no need to peel the rubber bottom of pedals and scrape the bottom to remove the leftover glue, like Boss or Digitech - or the Tube Screamer.
Just make sure you clean the rubber pad well with alcohol, let it dry and apply the fastener.
For pedals without the rubber pad (Morley, MXR, TC) make sure you pluck the little rubber feet off and wipe the bottom with alcohol and then dry with a clean towel.
For rubber bottomed pedals, I've found it's best to wait a couple of hours before adding the pedal to the board and removing or repositioning - it doesn't seem to matter with pedals that simply have little rubber feet.