Just use 3M Dual Lock as others have mentioned. Doesn’t attract hair, won’t stick to carpets and you need a much smaller amount to hold a pedal in place. I wouldn’t buy a pedal covered in Velcro and dog/cat hair and little pubes from naked guitar escapades.
It's hard to believe if you rarely venture outside of TGP, but there's a large faction of players who just plug their pedals in and leave them on the floor. When there's Velcro on the bottom, they slide around like crazy!
I used Velcro until recently. Dual Lock is so much easier to work with and is even stronger than heavy duty Velcro.
I redid my Pedaltrain Pro and started by removing the Velcro from the rails. Nightmare! It had been on for about 8 years and literally required 90 minutes of sanity-rattling misery to get it off, then clean up the residual goo. Enter Dual Lock, which creates a super tight bond, yet paradoxically, is relatively effortless to remove, both from the board and the pedals. Wish I'd known years ago!
Bike chain method as well. I use short screws with large heads so they are easy to remove - almost by hand for quick pedal swaps. Only use 2 per pedal - diagonal opposite. They lock in real tight with no movement. Can't do Velcro.