If you have a first name, you can do a X-Ray LinkedIn armed only with the basics.

Example: 

site:linkedin.com intitle:lance "location * san francisco bay area" "industry * e-learning" 

If you’re 3rd degree or beyond, you’ll notice that Lance has no mention of his employer, skills or anything outside of his name, location and industry. These three elements are the minimum a public profile can have so take those and run your string to identify your prospect. If your search is more generic and their public profile has additional identifying information, you may want/need to include that in your search query.

Tip: LinkedIn automatically makes a profile non-public if a users has selected to only show the first letter of their last name in their profile “Display Name” settings. This means you will not be able to find the users profile via X-Ray.

Happy Sourcing !!