Answers to a recent question about a homemade USB cable mention that USB and other data (Thunderbolt, VGA, and HDMI) cables should not be coiled. So what is the proper method to manage long cables without coiling them, in order to minimize interference?
A specific situation is that all the cables I have access to (work environment) are very long. I have about 20cm of air between a Thunderbolt laptop docking station and a monitor connected via HDMI->VGA cable. But the cable is 3m long. A similar situation for another monitor and USB devices also connected to the station. Geometric and cosmetic constraints mean that the cables should not stray too far from their current location behind the desk, nor should they have an unwieldy appearance.
To clarify, these cables are not longer than the max rated length for each protocol. They are however wrapped up in coils, which the answers in the linked question mention is a "bad thing".
In the general sense what would be the proper way to route such long but to-spec cables, instead of coiling them, and why?