As reported in Men’s Journal:

During his busiest tours, Clapton would request that his long-time manager, Roger Forrester, book only hotels that were near fishing facilities. He would spend hours alone on lakes, rivers, and streams fishing before gigs. He jokingly called his 1986 U.S. tour a “fishing” tour. In a 1998 interview with Larry King, Clapton explained, “We would only play places near water, all across America.”

For the full Men’s Journal article and a pic of Iceland’s biggest salmon caught by Clapton himself, use the link below:

http://www.mensjournal.com/adventure/articles/eric-clapton-just-caught-the-biggest-salmon-in-iceland-w433301