15-6-39(b). Trial by the court.
Issues not demanded for trial by jury as provided in §15-6-38 shall be tried by the court; but, notwithstanding the failure of a party to demand a jury in an action in which such a demand might have been made of right, the court in its discretion upon motion may order a trial by a jury of any or all issues.
Source: SD RCP, Rule 39 (b), as adopted by Sup. Ct. Order March 29, 1966, effective July 1, 1966.