Karch Kiraly is an accomplished indoor and beach player. Now he's the US womens indoor coach. Have a peak from one of his articles:
Excerpt from Karch's article, "The Game Teaches the Game"
"Certainly, a degree of proper coaching is essential to player development. I credit much of my success to a strong fundamental background I gained while playing at the beach with my father beginning at the age of six. Rick Olmstead, who was my high school coach in Santa Barbara, expanded on that base, and so did the legendary Al Scates while I was at UCLA. Both my U.S. National Team coaches, Doug Beal and Marv Dunphy, furthered my development with their knowledge of the game. I'm still learning today as I work with Hugh McCutcheon, our great U.S. Women's National Team coach [2009-12]."