Sorry to reply so late to this post, but I just found this and wanted to share it with those interested in mounting their Kemper Stage on a pedal board with Dual Lock.
Dual Lock is awesome, I agree. I was searching for the perfect way to mount my Kemper Stage to my giant pedal board without restricting airflow to the vent on the bottom. In my search I found these little things from a company called Waytek inc (https://www.waytekwire.com/item/92008/3M-SJ-3463-Dual-Lock-Tape-Rounds-Black-/). It was $10.90 for a pack of 25. They are basically Dual Lock disks without adhesive but with a hole four mounting with screws. And the bonus is the Kemper Stage screws that hold the rubber feet in place hit perfectly. The screw head fits perfectly in the recess and the screw shaft fits the hole perfectly. And who doesn't love it when the shaft fits the hole perfectly right?!
But seriously, these things are like a direct replacement for the rubber feet. You will still need some Dual Lock to mount to your board. I just cut four 1" square pieces, attached them to the Dual Lock disks I replaced the rubber feet with. Made sure they were straight, pleased the tape and stuck it to the board. It's not going anywhere!
The other cool thing that I thought of with these things is to take the rubber feet that were removed and use properly sized machine screws and nuts to attach the Waytek Dual Lock disks to the top of the rubber feet. This way if you want to yank the Kemper Stage off of the pedal board for home use sans pedal board, you could just slap the rubber feet back on via the Dual Lock. Thereby protecting the Dual Lock and also keep the Kemper Stage from sliding around on surfaces like hardwood floors and smooth basement concrete floors. I have not done this part yet as I intend to leave the Kemper Stage on the pedal board at home also.
I hope you find this useful.