No room for basting?
There is NO WAY I can crawl around on my floor to baste because of an old knee injury. I've developed my own technique that I have used for quite awhile now...
I baste all my quilts on my old dining room table, 1/4th of the quilt at a time. The fabric and batting hang over the edges of the table as I'm working on a particular section. You could tape the backing to the table if you like, I never have. I make sure that all the layers are lying smoothly on the table top. Once I get 1/4 basted, I slide everything over and make sure that the layers are all lying smoothly before I start on the next section. I do it this way for both thread basting and pin basting. I've never had any trouble with puckers, and I've been doing it this way for many years.