Sightscreens and pitch covers are the largest movable objects on a cricket ground. Both are broad flat panels outdoors, which makes wind their governing design problem.
A sightscreen is a sail on wheels
A sightscreen presents a large vertical surface to the wind and stands on a narrow wheeled base, which is close to the worst possible combination for stability.
Designers respond with heavy bases, wide wheel spacing, and in many cases louvered or slatted panels that let air pass while still reading as a solid background.
Ground staff also stake or brake screens when they are parked, because an unattended screen crossing an outfield in a gust is both a hazard and expensive damage.
Why the screen must be visually uniform
The screen exists so a batter can pick the ball out of a consistent background at the moment of release.
Any patterning, shadow or gap breaks that uniformity, which is why frames are painted to match and why moving screens between deliveries is disruptive.
Color matters as well, with white screens used for the red ball and dark screens for white-ball cricket, requiring reversible or duplicated equipment.
Covers have to shed water, not hold it
A flat cover left over a pitch collects rainwater in the middle, and the pooled weight then presses moisture through into the surface it was protecting.
Framed covers are therefore built with a crown so water runs to the edges, and the run-off has to land clear of the square rather than at its boundary.
Where full covers are used, the outer sheets carry the water further out, and drainage around the square becomes as important as the covers themselves.
Deployment speed is a design requirement
Covers have to be on the pitch within a couple of minutes of rain starting, which means they are stored close by and moved by a trained crew.
Hover covers and wheeled frames exist to reduce the number of people needed and to avoid dragging equipment across a wet outfield.
Every one of those solutions is a compromise with the wind problem, because a cover light enough to move quickly is light enough to lift in a gust.
Storage decides ground layout
Screens, covers and their tractors need parking within the boundary rope's reach, and that space competes with seating, advertising and camera positions.
Older grounds often store equipment in awkward corners, which lengthens deployment times in exactly the conditions where speed matters.
Newer builds allocate dedicated bays behind the boundary, treating the equipment as permanent infrastructure rather than as something wheeled out when needed.

