I assume the reason you get puckers in your binding is that the binding is too long for the quilt edge. Measure the CENTER of the quilt in both directions. That is the length to cut the binding strips, plus extra for corner turns. You shouldn't ever have puckers in your binding doing this. For instance, if the center length is 50 inches and the edge measures 51, cut the binding 50 plus corner allowances. Pin mark the binding and quilt into half and quarters, and pin the binding to the quilt matching the pins. Let the corners hang loose. Stitch the binding to the quilt, easing in the quilt's excess. No puckers and a smooth, non wavy quilt edge.
SandyQuilter