Abstract: In some examples, an apparatus can include a housing, a tilt structure connected to the housing, a swivel structure connected to the tilt structure, and a rail structure connected to the swivel structure, where the rail structure comprises a sliding mechanism to interface with a track such that the housing is translatable along the track.

Abstract: A sheet is removably positionable adjacent to a window. The sheet has upper, lower and side edges. A plurality of braces is secured to the sheet. Each brace has a metal base plate and a pair of fixed housings. A vertical push rod is slidably supported in each fixed housing for axial reciprocation. A cam is rotatably secured in each fixed housing. A swivel rod is secured to the handle and both of the cams. A reciprocable housing has an open upper face and a lower face. The housing is secured to the push rods. A rubber bumper is secured to the upper face. The bumper is adapted to contact an adjacent surface when in the extended operative orientation during operation and use.

Abstract: A tool is provided for facilitating angular alignment of a hydrofoil coupled to a mounting block having a flat bottom surface area. The mounting block is pivotally coupled to a cylindrical strut having a longitudinal axis. The tool has a saddle for engaging the cylindrical strut and a plate coupled to the saddle. The plate has an alignment edge that, when positioned by the saddle beneath the flat bottom surface area of the mounting block, forms a desired angle with respect to the longitudinal axis of the cylindrical strut.