I still crawl around on the floor. I have a carpeted bedroom, so I vacuum really carefully (two cats and a dog) and pin my layers down. I haven't had a pucker yet (now I'll surely be jinxed). I used to baste (when I still hand-quilted everything) and now I use safety pins.
I tried Elmer's glue basting for the first time recently with a whole series of placemats - and it works really well - but I don't think I am ready to do a large quilt that way. My two complaints with the glue basting: I probably used too much glue, so it went through my layers and got on my work surface; and when it came time tot hand-sew on my binding I would hit dried glue hard patches that were difficult to sew (this might have been from too much glue too...)
I have tried clamping onto a table and basting there, but it really isn't my favorite way.
Alison