Hendrickson also spent time as the captain of the Saint Vincent and the Grenadines national team, and was one of the team's best players since earning his first cap in 1995 against Barbados. He made 24 appearances for Saint Vincent and the Grenadines in the 1998, 2002, and 2006 World Cup qualifiers and 123 overall, scoring twice during a 1996 Caribbean Cup match against Haiti on 27 May 1996.