Madeiran wall lizards are eating our grapes!

We have a small vineyard in a stone terrace and Madeiran wall lizards eat more than half of the grapes. We may add nestbox habitat for a local raptor that eats lizards and maybe spray garlic oil in the stone terraces….

Any biological / animal ideas to make the lizards decide to leave, be eaten by a predator or otherwise stop eating one grapes?

We don’t want to net the grapes or wrap the base of the vines (the vines lay flat in many cases).

Thoughts?