On 1 June, Stimson was appointed as the new manager of League Two club Barnet, but was sacked seven months later on 1 January 2011 due to a bad string of results which left the club near the bottom of the table. Towards the latter stages of the 2010–11 season, Stimson accepted a coaching role at Dagenham & Redbridge. After a brief spell at Dagenham, he was appointed manager of Conference National club Kettering Town on 7 September 2011. On 4 January 2012, Stimson left Kettering with the team placed in the Conference relegation places. Four months later he was appointed manager of Thurrock following the club's relegation to the Isthmian League. At the age of 49, Stimson was registered as a player again for the 2017–18 season and named himself as a substitute on a number of occasions.