Here's a few shots of my old board using bike chain links to bolt everything down including the power supply and D.I.
I never liked using velcro and my signal chain was fairly figured out ahead of time.
IME mounting pedals with the bike chain links is inexpensive and rock solid (I could pick up the whole board by one pedal if I wanted).
I like the solid feel under my foot and honestly removing a pedal from the board is no harder than removing the bottom plate from a pedal.
Here's a few shots of my new board, everything on the bottom tier including the power supply and D.I. are bolted down
with bike chain links.
All five of the MXR pedals on the top tier are sitting in milled pockets and are bolted directly into
the bottom of the pedals with longer bolts.
Bolting down pedals may not be for everyone but I like it.
A couple of old shots of the bottom of pedals with links, these are the chrome ones I used at first. Later my nephew
gave me some pieces of blue and purple BMX chain shown in the pics above.