I sometime think the Sosua authorities don't want to seriously and suddenly tackle this embarrassing and disgusting issue of gringo chasing chichas, because I think deep down they know the damage that could have on the community and the town, even many townships around the area. They are trying the slow approach. The same with central government and further up the command....
There are many measures that have been taken in other parts of the world, I have seen it myself, that can very quickly put an stop to all this, but they don't do it. For example they can stop hotels allowing un-registered guests into the premises, this is quite common and maybe part of hotel rules in a lot of countries.
Can stop bars and clubs (even restaurants) to let people to just come and sit there (specially girls). They must consume food or beverages, most girls can't afford to buy even water every hour, this is done in some other places I have seen - even here a while back I think. Having girls just sitting on the premises to attract clients is called "promoting prostitution" and banned in a lot of countries.
Finally they can ban soliciting in public places, this is a well known and enforced law in UK, you can't go curb-crawling or even walking down the street and pick up - same for both johns and girls. This is not even allowed in bars and restaurants because they are considered public places. Not sure but this may need a proper law about it passed in parliament, but maybe that can be done locally.
Then we will have such a ghost town only the missionaries dare to go out to promote their God... ! lol (by the way I saw a guy , copy of Jesus Christ lookalike with long blonde beard and white clothes !!!, sat down on the beach and in 5 minutes had like 5 o 6 chicas sat around him listening, preaching them about God, then walked off with two of them....! I think this is a new game in town, I am sure he will get a special discount of some sort, working for non-profit missionary org and all that... !? lol
And the level of poverty and crime go up so much you will not be safe in your house let alone venture out, and well, if not all but most businesses will close down - if you remember Boca Chica some years back after their crackdown you know what I am talking about.....