That is the million dollar question Mr. Samson!
Snovio & Saleslift.io are free to use. They both have paid features.
∙Snovio is more keen on data mining and has a wide range of tools, definitely check them out.
∙Saleslift.io is great for LinkedIn and is meant for scraping emails – try searching with filters on LinkedIn:
Mobile Home Park >>> location (US) >>> title (owner, principal, managing partner etc)
This should show you listings of all the people on linkedin with their titles – alot list as Owner of Mobile Home Park.
Saleslift will have a button to do this on everyone’s linkedin page under their bio & title.
Both of these run as extensions for Google Chrome by the way, so it’s convenient for you anywhere on the web.