I have tried basting spray. It wasn't 505 because that so expensive, but one I bought at Hancock's. I think I sprayed more on the area around the quilt sandwich than I actually did on the fabric. I tried to be very careful, but spent far too much time cleaning up all the residue that didn't make it on the fabric. I guess I'm an old fashioned type of person - just can't seem to develop the skill to spray baste.