I prefer to spray baste my quilts for quilting rather than pinning. Spray basting keeps the layers together better and helps to cut down on wrinkles.
Here is the method that I use....
|Painters Tape - Clips - 505 Basting Spray|
|Clip the backing tightly to the tables. You can tape to the floor if you don't have tables.|
|Layer batting over backing and smooth out.|
|Layer the quilt top and smooth out.|
|Peel back the top two layers on half of the pile and spray baste.|
|Peel back the second half and spray baste.|
|Smooth the batting onto the sprayed backing on the first half. Spray the batting.|
|Smooth the backing on the second sprayed layer and spray the batting.|
|Smooth down the top on both halves.|
This method of getting all three layers in place BEFORE spraying keeps everything manageable. I used to spray the entire backing then try to get the full batting on top etc. It was a miserable job to manage the entire batting as it invariably stuck to itself in the process.
I hope you give this a try. In the warmer months, I don't use the table but tape down the backing on the deck outside. If the quilt is lined up to the slats in the decking, the quilt will stay straight.