Nice idea Donnie, not sure that the law in Spain would allow for that but I agree the best way is to try and get the community to help polise itself.
Once again there are potential problems with data protection by giving out phone numbers etc but something along the lines of a community website where you could be contacted by fellow owners would allow this sort of access plus providing many other benefits. This of course would have to be controlled by the administrators and I am pretty sure there must be some suitable punishment available in law.
Problem with law in Spain is that it is a very slow process and even chasing bad debts from non maintenance fee payers is a drwan out process.