ok here is what I have come up with. Hopefully this should work well..

I tested all the options and ended up going with Kelly Holsten’s suggestion from the website of terminating it at the babystay. If you lead it up farther than that it has to run near the toe rail loosely… Run to the babystay anchor point it will let you reach the pulpit but doesn’t give as much slack over the sides as if it was run all the way forward by the toe rail.

I used a figure eight knot with a bight in it to attach to a large snapshackle that hooks into the babystay attachment point… while i was at it I also changed out the babystay attachment for another large snapshackle to make it easier to get it out of the way on the fly. 🙂 I did the same for the jib attachment.

ok here are the pictures for the jacklines

After running it this way and having some discussion of it with others I summarized our conversation of some of the projected advantages and disavantages of running the jacklines like this.

I totally agree about it being in the way on the cleat.. it pretty much makes it unusable for anything else while it is attached… I wish I could do as you suggested and run a line through the center of the cleat but there is no centerhole on any of the cleats on Sea Puppy. I am thinking about another attachment method back there but I really like the cleat arrangement as it allows you to tighten the jacklines when you tie it on which makes them lie hard and flat where they run.

Terminating at the cabin top would as you say cause problems with the tether getting in the way of the mainsheet as well as with anyone else in the cockpit if you had someone there… I don’t see them getting in the way at all where they are now other than the cleat issue.( I will work on that 🙂

I have an inflatable vest with integraded harness that you hook into 2 D rings on. I am in the process of building the tether with short and a long side.. It will have elastic running through the inside so that untensioned the longest will be about 2 to 2.5 ft long with the fully stretched length being about 5 ft for the long one and 2.5 or 3 for the shorter one.

About moving forward while hooked up. It is more awkward to go between mast and shrouds except that in real bouncy stuff so far I tend to get low and slow through there anyway going forward. Also lets say i bounced overboard at that point.. the way it is now I would hang about 3 feet overboard instead of 5 or 6 feet with the jackline run on the outside of the shrouds. its a trade off… and in actaully practice I might change my mind and do it differently later.

The fordeck hatch is non opening if the jacklines are run this way.. but I allways close and latch that if I’m underway anyways. Around here even in the waterway sometimes we get power di**’s that think its funny to throw a 5 foot wake at a small sailboat… I’ve had water on the fordeck from that before with the hatch open.. lol its most always closed now.

About sewing loops in the ends of the jacklines. I think that with it double or triple stictched with kevlar thread etc.. it probably would be very strong. They certainly make stitched loops strong enough to pick up boats from some of the lift straps ive seen…. I personally don’t know if sewing it myself would be strong enough with what I have. With it on the cleat I know its strong and I can tension it to take slack out of it easily. I would love to have a strain gauge that went to about 10,000 lbs and could test to destruction a lot of the stuff I use on the boat.. such as lines, webing … knots etc.. i could get some real world with no hype numbers.

couple more images of the jacklines run this way