Basting with or wihout?

Basting the hexies in the car. I asked on facebook if people would leave the hex papers in when basting or take them out before they baste.
My feeling was to leave them in because
1 : I am doing this in the car
2 : I am worried the edges of the hexies are too unstructured without the paper
3 : seems the paper might keep it flat while I stitch
What would you do while basting hexies to the background while in the car?
Pat Sloan