It is very easy to see if there is a tuck in the quilt when you are smoothing it out over the batting. And it is easy to correct before it is dry. It doesn't dry immediately. I like to lay the quilt on my dining room table and do the center first. Also, the way the light is in there, I can see immediately if there is a tuck or bubble and can fix it right away. I did manage to get tucks with pin basting or thread basting, no matter how careful I was not to stretch the batting, taped it down, pins close together, etc. I guess no method is totally foolproof, but this one for me works the best. YMMV.