An aircraft, comprising: a wing; a lateral-control surface (126, 128, 130, 132) movably coupled to the wing and configured to control the roll and/or the yaw of the aircraft, the lateral-control surface movable between a neutral position, a first upward deflected position, and a second upward deflected position extending beyond the first upward deflected position; and a mini-spoiler located on or forward of the lateral-control surface and associated with the lateral-control surface (126, 128, 130, 132), the mini-spoiler movable between a retracted position and a deployed position, the mini-spoiler configured to be moved from the retracted position to the deployed position based on the lateral-control surface being moved from the neutral position to or toward the first upward deflected position, the mini-spoiler further configured to be moved from the deployed position to the retracted position based on the lateral-control surface being moved from the first upward deflected position to or toward the second upward deflected position; and wherein the mini-spoiler includes an upper surface and: the upper surface has a chordwise dimension between approximately one percent and approximately five percent of a local wing chord when the mini-spoiler is in the retracted position, wherein the local wing chord is measured from a leading edge of the wing to a trailing edge of the wing at a location local to the mini-spoiler; or the upper surface has a chordwise dimension between approximately five percent and approximately sixty percent of a chordwise dimension of an upper surface of the lateral-control surface (126, 128, 130, 132) when the mini-spoiler is in the retracted position and the lateral-control surface (126, 128, 130, 132) is in the neutral position. a wing; a lateral-control surface (126, 128, 130, 132) movably coupled to the wing and configured to control the roll and/or the yaw of the aircraft, the lateral-control surface movable between a neutral position, a first upward deflected position, and a second upward deflected position extending beyond the first upward deflected position; and a mini-spoiler located on or forward of the lateral-control surface and associated with the lateral-control surface (126, 128, 130, 132), the mini-spoiler movable between a retracted position and a deployed position, the mini-spoiler configured to be moved from the retracted position to the deployed position based on the lateral-control surface being moved from the neutral position to or toward the first upward deflected position, the mini-spoiler further configured to be moved from the deployed position to the retracted position based on the lateral-control surface being moved from the first upward deflected position to or toward the second upward deflected position; and wherein the mini-spoiler includes an upper surface and: the upper surface has a chordwise dimension between approximately one percent and approximately five percent of a local wing chord when the mini-spoiler is in the retracted position, wherein the local wing chord is measured from a leading edge of the wing to a trailing edge of the wing at a location local to the mini-spoiler; or the upper surface has a chordwise dimension between approximately five percent and approximately sixty percent of a chordwise dimension of an upper surface of the lateral-control surface (126, 128, 130, 132) when the mini-spoiler is in the retracted position and the lateral-control surface (126, 128, 130, 132) is in the neutral position. the upper surface has a chordwise dimension between approximately one percent and approximately five percent of a local wing chord when the mini-spoiler is in the retracted position, wherein the local wing chord is measured from a leading edge of the wing to a trailing edge of the wing at a location local to the mini-spoiler; or the upper surface has a chordwise dimension between approximately five percent and approximately sixty percent of a chordwise dimension of an upper surface of the lateral-control surface (126, 128, 130, 132) when the mini-spoiler is in the retracted position and the lateral-control surface (126, 128, 130, 132) is in the neutral position.