My experience with sticky Velcro has not been good. I have tried to stick it to battery LED lights, up on the carpet liner (with the goal of not moving them around, so at to "fur" up the carpet) and on almost every one, the adhesive softens in the summer heat, and the dang light falls off.
I haven't commented on the OP yet, because I don't have a 23. However, it was very easy to remove the backrest bolsters on my 192. I had to replace the plywood "shelf" that screwed down into the cabin liner. It was just 4 #12 SS screws. I'm adding a few more screws to make sure it's nice and sturdy, though the originals did last 25 years or so. But I do use them...