Complex sentence: Surfing can also be done in manmade sources such as wave pools and boat wakes the term "surfing" refers to the act of riding a wave and not the form (with or without a board) in which the wave is ridden.
Split into simpler sentences: Surfing can also be done in manmade sources such as wave pools and boat wakes. The term "surfing" refers to the act of riding a wave and not the form (with or without a board) in which the wave is ridden.