The short answer

Size a cargo net for the loaded footprint, not the empty cargo bay. Record the shortest and longest distance between usable anchors, the height of the load, and the hatch clearance. A net that is too large can sag; one that is too small can overload hooks or release under tension.

Compare the geometry

Item Measure Failure mode
Anchor spacing Opposing and adjacent points Hooks do not reach or pull at an odd angle.
Load footprint Width, depth, and height Net misses corners or rides over the load.
Net stretch Stated range, not visual guess Excess stretch changes tension.
Hook orientation Correct seat and load direction Hook can unclip or rub trim.
Hatch clearance Highest loaded point Net or cargo can contact glass.

Place hard-edged items low, remove slack, and recheck after a short drive in a safe setting. Do not route a net over a passenger, seat belt, child restraint, or emergency access point.

Limits

This guide does not certify a cargo net for crash restraint or establish an anchor rating. Use rated tie-downs for heavy or dangerous loads.