Sea walls are well known to cause "flanking erosion" and the shape of the Papagayo wall is particularly bad as it causes wave reflection along the beach rather than back out to sea. Unfortunately, the Club probably didn't do much research and they may be playing a game of whack a mole trying to fix one problem and creating another. There are many examples of people using sea walls to protect structures only to cause way more damage than the original structure was worth... The tried and true answer is to move it inland.