If the OP truly feels the threat at the beach is that severe, why would you knowingly go where you are putting yourself and family in such harms way? Find another beach or get a pool installed...
Any beach can be dangerous, same with a pool, no idea where criminals are so carry 99% of time. I carry at the pool too. The pool/beach is an easy spot for criminals to hit peoples wallets up, people are almost naked and = likely no gun.