Best knot for Halyard tensioning

[phish133]

What's the name of a good knot to make loop used for tensioning the halyard before its cleated? Not to tie it to the upper spar, but a loop many folks use to make a purchase system as it descends the mast. It's not a standard slipknot, but one thats eaiser to untie after its been under a good amount of tension. I've got a good "knot" book, so if you can tell me the name of one/two, that should work.
Thanks in advance.

 

[DanB]

Not certain what you mean. Where did you see this described?

 

[mike4947]

Try a bowline

 

[adavid]

Use a Trucker's Hitch. It will come out just like a slip knot, just need to pull a little harder.

http://www.animatedknots.com/truckersrescue/index.php

 

[Porpoise2]

"...It's not a standard slipknot, but one thats eaiser to untie after its been under a good amount of tension..."

The bowline retains 85% of the line's strength, and is the strongest knot to untie after a load: even if fully jammed, it can be released by hitting it with a hammer. I use it for nearly everything, including tying two lines together.

 

[beldar boathead]

The trucker's hitch is what everyone uses for the halyard tensioning you describe. BB

 

[rickrubio]

Another knot that is excellent for when you need a loop in the middle of a tensioned line is the butterfly knot (sometimes called the alpine butterfly). It won't give you the 3:1 purchase of a trucker's hitch, but it is strong and very easy to untie even after being heavily loaded. I have used it many times in climbing, where knots have to hold falling bodies and still be untiable by hand.