Career
As a player he played fifteen seasons at Roda JC, in between he spend half a season on loan at VVV-Venlo. He played 323 professional matches and scored 23 goals in them. As a manager he was assistant at Roda JC from 1998 to 2005.
He then managed Patro Maasmechelen in Belgium, before replacing Paul Put at Lierse Saskatchewan after Put was named in a bribery case.
At the end of December he started at Belgian second division club KVSK United, only to resign two months later on 25 February after a series of bad results. On 20 July 2010 he signed a one-year contract with MVV, playing in the Dutch Eerste Divisie.
He stayed three seasons with the team from Maastricht, but accepted the offer of VVV-Venlo in the summer of 2013. However, he was fired at the end of the season.
On 1 June 2014, he signed with Roda JC Kerkrade to help the team return to the Eredivisie after its relegation.
However, after a series of disappointing games, Trost and Roda JC decided to part ways on 7 April 2015.