Usually it's a massive network, many unpaid friends etc. Most scouts value is in their network from grassroots up. The Nowhere Men is a good book about scouting and how little the majority get recognition.
http://www.dailymail.co.uk/sport/football/article-3595446/Rafa-Benitez-agrees-stay-Newcastle-United-manager-begins-work-list-transfer-targets.html
Gone apparently.