Seajet
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Yup I have a double hook harness line, great for posing but surprisingly little help on deck !
I have a gas sprung boom vang and so the topping lift is redundant. I regularly use the topping lift as a quick safety line to clip on while going forward. It has the advantage that t's impossible to fall down and overboard and you could probably even swing down the leeward side in order to reach the foredeck more quickly! It also gives you something to grab onto and it doesn't get under your feet - so far I haven't experienced any disadvantages but I'm sure there are some theoretical ones forumites could point out to me!
It clips onto the end of the boom like normal...if I didn't have the gas spring it would be needed to hold the boom up when the main sail was down....
I now have that set up. My line starts from about 8 feet from the bow & goes to the stern. It hangs just above the water. Idea os , if i go overboard, i have something to grab & to try & stop the bouncing about from being dragged along.. I have another hook on a 150mm dynema line which i would try to hook to the line. I have a spinlock harness cuttter to then cut the harness. I would then slide rapidly aft where i have a loop that i can use as a step to get onto the stern with. The line at the side is tensioned with a cable tie which would snap allowing the line to form a loop aft. The end of this line os alongside my Aeries steering so i would also have some metalwork to grab as well to give hand holdsI've just seen an Etap in the marina which has jack stays on the side decks, and also a line rigged through the pulpit and around the outside of the guard rail at stantion base level, back through the pushpit rail. I've no idea what it's for but I'm wondering if it's somebody's idea for getting to the back of the boat if you go overboard at the bow. Whether you could transfer your line from the jackstay to the outboard rope, I have no idea.