What advice do you have about practicing tennis?

Burton 'Gus' Guster is a character on the USA Network television dramedy Psych played by American actor Dulé Hill. Gus is Shawn Spencer's best friend, and co-owns the detective agency "Psych" with him. Gus tends to be straight-laced and more cautious, although he has been friends with Shawn for long enough that he understands that Shawn cannot be stopped once his mind has been made. He functions as the straight man for Shawn's antics, and provides sobering advice and steady support.