An interesting summary of dune processes and their vulnerabilities from further up the coast from Doonbeg golf course. Even in this Special Area of Conservation certain stabilization methods have been adopted
Fanore-Beach-and-Dune-Management-Report_2016 : Current Problems and Planning for the Future.

The arguments are neatly summarised below:
"Effectively, adopting a policy of no infrastructural protection works could result in a return to unacceptable rates of dune erosion and sand movements onto adjacent lands.
But,under future climate warming projections such erosion of the dunes, consequent sand blows movements and wider environmental changes are very likely to happen anyway to dunes such as these at Fanore due to SLR, storminess winds and climate change. So, why ‘spend money’ now trying to stop the inevitable?

Also another extract from the report:
" Certainly, a decision for no fencing or related dune protection actions would save money! This approach may, however, be politically and in current conservation policy terms, unacceptable.

Also note this is an area with no infrastructure to protect.

This does lead to the obvious question concerning Trump's golf course: Why is sauce for the goose not sauce for the gander?