My glue basting method is very simple. I spread the batting on a table. Position the backing or top over it. Pull back half. Drizzle glue from bottle in thin bead. I usually do a grid kind of where the pins would go. Then smooth up that half. There is time to smooth and adjust. Then pull back other half. At this point the first part is secure. Do other half. Flip over and do other side. If there is a glob just smooth with your finger. Sometimes I put the glue bottle in some warm water to make it flow easier depending on how warm the house is. I let it dry over night. I’m about 30 quilts in and have never had a pucker or wrinkle. It doesn’t gum up needle when dry. For me it replaces
pin basting not spray basting so don’t need it on every square inch. I also don’t have any hand, wrist, arm or shoulder issues which keep me from gently squeezing the bottle.