the smooth wood is more visually pleasing with the added benefit it does not tear the condemned woman's backside as much as a rough cross would prolonging her suffering. The down side is
Messaline's Premium French Crucifixion Wood is not cheap and often comes with a 'one time use only' covenant with the bill of sale (which is waved with a purchase of 100 or more crosses such as for the Hill of 100 Crosses).
The rough wood is cheaper and less labor intensive.
If you really want to piss the condemned wench off (as if crucifying her isn't enough to do so
) use fresh cut cedar and hewn only the face her backside will rest against. It will ooze sticky aromatic sap that is sure to rip at any wound from a prior scourging!!!