I have started using my bags of batting strips for smaller projects. Spray baste to backing butting up next to each other, or overlapping by 1/8" to 1/4". Sems to be working. I try to quilt in opposite direction to hold together. Got to use up some of my batting scraps. I need the room.
If the quilt police come after me for over lapping, please visit me in jail. Bring a quilt!