Harvest of organic olives with mechanical vibration in Douro

We are using vibration harvester, which shakes the boughs, dislodging the olive fruit in seconds ans without damage to the trees or olives. It definitively creates some vibration in the trunk but seems not to affect the heath of the olive tree. We have studied the effects of this harvester and we concluded no major damage caused to the tree on the weeks and months after the harvest.