Getting the quilt ready to quilt is the worst job of all so I invest in all the easiest gadgets to help out.
Tried the spray and it worked well for awhile but then had a disaster with it so stopped using it.
Pining always works so went back to that. But I use the bent pins with covers and the quick clip with the large wood handle, much easier on the hands.
I cant get down on the floor so use my cutting table with the special clips to hold the quilt. I use the large black clips when I run out of the small plastic ones. Larger quilts I have to reposition so the clips are a must.