As parents, we must all remember that pool safety comes first. Not second, third or fourth. It takes seconds for a child to fall into a pool and the end result can be from bad to fatal. Removable pool safety fence is not a law in Puerto Rico. It should be but we all know the politics surrounding just getting the "common sense" laws passed in the Commonwealth.
As a first step it is recommended to put door alarms on all doors leading to the backyard from inside the house. These can be purchased online and are very economical. The second layer of protection you would want to add to your property is to make sure all gates leading to the back yard are lockable and self closing. The most important layer of protection is the pool safety fence. This protects children when you are looking and when you are not looking. The importance of a self closing, self latching and lockable gate are self explanatory especially when you have a pool service person (the gate closes itself so the exposure to the pool is reduced).
Whatever your priorities are when it comes to acquiring a new house with a pool, make sure that pool safety fence is one of them because it can truly make the difference !