Strong's legal practice thrived during the tumultuous war years and was one of the most successful in Hampshire County. He became a judge of the Court of Common Pleas in 1775 and was appointed county attorney of Hampshire County the following year, a post he held until 1800. On more than one occasion he was offered a seat on the state's supreme court but rejected the position on account of its inadequate salary.Trumbull, pp. 594–595. Strong was described by a contemporary as meticulously detailed in his preparation of legal paperwork and a persuasive advocate when speaking to a jury.Trumbull, p. 595.
