Great tips-I also can no longer get on the floor-DH set me up with a long tressle table (two, actually)side by side and placed a sheet of plywood on it (which I used masking tape all around the edges first), then I use giant bull-clips (plastic) to hold the layers down. If it is a large quilt, I start at one edge of the quilt, baste what is on the table, then just un-clip the shift the rest of the quilt to the top, re-clip the edges and finish basting. I have never gotten a wrinkle-just be careful the backing is smoothed out well and clipped. Sometimes DH will help me on the other side of the table to clip. I used spray basting for smaller quilts, but not a big one - yet.