Sewing webbing loops?

[ntxkayakr]

Seemingly it's not really the pattern that matters but rather the number of stitches.
As long as you cover at least twice the width in stitching.
Bartacs, zigzag, boxed X, whatever.

I strongly agree with that. Would add that if multiple stitches are tied off independently there is less change that strap will fail if one stitching is torn and starts to unwind, i.e. thread is pulled and you lose entire stitching. This is why i prefer multiple independent bar tacks. Your experience may differ, but mine tells me that everything will eventually fail so i want redundancy and backup. Braiding vines and tree bark in the wilderness is not as much fun as it sounds. I'm there for other activities. ;-)

PS the modified multiple short zigzags perpendicular to length of webbing as show on caves.org article (5th in chart) in comment #9 above is what i prefer to use. This testing by them had a breaking strength of about 2000 pounds using 3/4" tubular webbing. (10X protection factor for an in shape person about 6' tall, under tall folks might want to consider longer hikes with fewer calories, or lower safety factors and frequent suspension inspections etc.) Similar to #3 in chart below but stitches going parallel to long length of strap not simply back and forth, however difference is minimal, Compromise is you add redundancy with multiple small independent stitches (bar tacks), less strength but more security to avoid catastrophic failure, i.e. bruised butt, head and ego.