HUH? Like Swiftcord, these 'woven' 12-braids are not really hollow and are diabolical to splice. APS splicing services won't touch the stuff to spice.
No, single braid uncored line like the inflatable boat builders use for hand-lines. Basically ski-rope.
That’s what I used about four years ago, the sun is hard on it. I’ll probably do mine again but use dyneema.
Depends on what material the single braid line is made of. I would never use Dacron or Polypropelene, however, I would consider Dynema. However, a flat webbing is still safer because even a single braid will roll under foot. Over the past couple of years there has been a lot of discussion about jack lines in Practical Sailor and on the Affordable Adventure Cruising website.
Consider NER Regatta Braid, has better “hand” and UV resistance. You really don’t need the brute strength of Dyneema, and the stuff feels greasy.
John at AAC recommends Dacron webbing. Based on strength and some give. His theory (using climbing as a metric) is that when you start to head over the side, you will get hurt from the harness if the jackline has no stretch to soften the impact. Dyneema has no stretch so it makes a bad choice. You need to control the stretch and climbers have found that Dacron is a better choice than Polypropylene products.
While I agree with the use of Dacron webbing, I don’t buy the give aspect of it. Even if they were made of dyneema, a jack line stretched between two distant points on the deck will pull away from the deck several feet under load, like a guitar string. That’s more than enough give to absorb shock. You don’t need stretch making it worse.
