Here is a link to Sharon Schamber's videos showing how she hand bastes a quilt using boards:
http://www.youtube.com/watch?v=bhwNylePFAA
http://www.youtube.com/watch?v=k_EjBGz5vGQ
I believe some people have used this method to spray baste also, but not sure. Anyone who does try to spray baste using this method should do it outdoors so they aren't breathing the spray for too long.