Such a great question, I wonder why no one asked me before? If you have a paid account you could do some pretty detailed searches and use InMail to contact. Here’s what I would do if I had a free account. Figure out the groups these folks belong to. Join the groups. Once you are in the groups, visit the group and you will see a tab at the top that says “Members”. Click that. You will be able to see each person, go to the profile if you are of a mind to do so. Best thing is you can usually send them a message. Some block this but generally you can send them messages. Free don’t need InMail or need to connect if you share a group. So figure out a reason these people should connect with you. Generally that would not be job or buying something. But find a reason that is of interest to them and start sending messages to them asking them to connect with you. Next, start networking- figure out how to talk to these guys.
If you believe this tip or any tips in this blog will contribute to the success of your LinkedIn experience, I hope you will give me just a few minutes of your time to help with my success and share my LinkedIn profile with some of your connections. Please read the “If My Tips Help You, Please Help Me” section of the blog to find out how to help me. You will find this section next to where it says home at the bottom of the picture on this page. By following this suggestion it will help you with your network too.