Louis Hofer has had a long career in Dutch baseball. Hofer was a catcher and third baseman whose career began in 1962. He played for Odiz Frogs (1962-1970) and De Spartaan (1974-1980). He never reached the Hoofdklasse as a player, peaking at the Eerste Klasse; De Spartaan moved up to the Hoofdklasse in 1981. He became an assistant coach with De Spartaan in 1981, was head coach of the Odiz Frogs in Eerste Klasse in 1982, was assistant coach for the Amsterdam Pirates in 1983 and then was head coach of the Pirates in 1984-1985.
In 1986, he was head coach of the Odiz Frogs. He began 1987 as head coach of OVVO but did not last the year; the same was the case, when he was head coach of the Amstel Tijgers in 1988. He was head coach of the Boekaniers (part of the Amsterdam Pirates organization) in 1989. He was an assistant coach of the Amsterdam Pirates when they won the 1990 Holland Series. He remained with them in 1991-1992 then was promoted to head coach in 1993-1994. He was Amsterdam's youth coach in 1995-1996.
Hofer's next stint was assistant coach of Kinheim from 1999-2002 before becoming head coach himself in 2003. He went back to being assistant coach in 2004-2005 but took the reigns in mid-2005. He guided the Amsterdam Pirates in 2006 and 2007 before steeping down and being replaced by Rikkert Faneyte; he returned as assistant in 2009 before back problems forced his retirement.