I prefer pinning, but it's been hard to do it since my local quilt shop closed (I could use their tables). There is another quilt shop I can go to, but it's some distance. I'm hoping next year to set up a board system to pin large quilts in my garage.
I tried glue spray, but I've not been very successful compared to pins. I avoid spray stuff as it affects the lungs. You cannot avoid breathing it in, even outside.