Apparatus for propping a device, comprising a platform, a bracket, a carriage and a backstay. The backstay is rotatable relative to the carriage and to the device. The carriage can be moved in a first direction, which can causes a device to move between a stowed position and a deployed position. Apparatus comprising a rotatable assembly and a device movable between stowed and deployed positions, a center of rotation of the device in the deployed position being at or displaced only substantially vertically from a center of gravity of the rotatable assembly. Apparatus comprising a platform mounting portion, a platform structure rotatably mounted thereon, a duct extending through the platform mounting portion and into a space within the platform structure, whereby fluid can be passed through the duct and into the enclosed space while the platform structure is rotating relative to the mounting portion. Methods of propping a device.