Hi Pedro, I have enjoyed your posts over the time I have been a member here. One thing I have noticed is that you have certain rules with regard to distance etc. Have you considered/tried taking a female friend (your wife for example!) to the beach as company? I imagine this would give you the chance to get closer to people who are likely to be suspicious?! As long as your female friend was aware of what you were striving for of course!
Thanks for your posts