I had never even thought of having a longarmer baste a quilt. That is a good idea
I haven't tried Sharon Schamber's method yet but I love the idea of it. I will be giving it a try. For now I had been doing safety pins - which sadly does get me some puckers on the back but since switched to spray basting...
My quilt group meets at a college classroom every 3 Saturdays and they have lots of long tables. A few in our group say they're going to begin basting their quilts there since there is more room there than they have at home.