Hoost studied at the Law School in Suriname with Hugo Pos and Harold Riedewald.

[2] In 1970, together with Eddy Bruma and Roy Adama, he founded the trade union Centrale-47 (C-47), after mass strikes in 1969, demanded a new and more progressive type of labor organization.

On 11 March 1982, army officers Surendre Rambocus, Jiwansingh Sheombar and Wilfred Hawker staged a counter-coup.

Hoost, together with the lawyers John Baboeram and Harold Riedewald, took on the defense of Rambocus at his court-martial.

[3] In the early morning of 8 December 1982, Hoost, Baboeram, Riedewald and 11 others were arrested and imprisoned in Fort Zeelandia, while Rambocus and Sheombar were transferred from the Memre Boekoe barracks, Santo Boma prison to Fort Zeelandia.