EZ - one man office, cut the overhead, no employees, work 16 hours every day, never take a vacation, take every case that walks in the door and try to charge $350 an hour, back then PD conflict was $75 and hour. SSD and SSI cases also pay big multiples on not so many hours. Never did much PI because too time consuming and too much competition. 20 years ago and no cell phones or email to waste time. You could do it now too, you just need a flow of clients and a referral network and a plan. I located my office between the two biggest bars in a one horse town that way the clients could have a drink before and after they met with me. After I ended up getting killed on taxes, I worked a lot smarter and a lot less.