Private Investigator’s have access to several information databases that are not available to the general public. But more importantly they have the training and experience needed to transform the raw data into actionable information.
To list all of the advantages of using a experienced private investigator is outside of the scope of this website as the information could fill a book or two. But the main point comes down to judgments made from experience. Most investigators have thousands if not tens of thousands of hours of experience working on investigations. To consistently conduct a successful surveillance and mobile surveillance you need an experienced investigator. Could you sit in a vehicle and take pictures and drive behind someone, sure! The downside is when you get caught or confronted by the police you can get injured or into serious trouble. Additionally, now you have lost the valuable element of surprise. Don’t put yourself into a dangerous situation and compromise the discretion of an investigation by trying to do it yourself.
Having a professional licensed investigators report admitted into court or having them testify on your behalf also carries a lot more weight then trying to get evidence admitted that you collected yourself.