Which Knot would be best

If you snapped a line and wanted to rejoin them ?

... depends upon if its an emergency ie you need to get home or not.

There is no 'good' knot except if you splice both ends to join. I think I read some where, if you have a knot, the line strength is halved so you really need to nurse the kite back to the beach once you have re-joined in your emergency.

I experimented years ago, and one of the joins I did was make two loops with a bow-line knots then join togeather. Another one was bowline loop one side, then a bunch of granny knots the other to make sort of lump for the loop to hitch around. Then I did a few fishing knots like 'locked half blood knot' and even normal old hitches.

The worst one was the granny knots and bowline loop, the granny knots bunched togeather to up to make a lump unravelled and snapped while under tension (kite looped and crashed as it was a front line).

Anyway, my conclusion is the only proper way is replace the line, then splicing with sheaths as protection and at a pinch to get yourself home by nursing the kite, a couple of bow-lines looped togeather.

cheers Robbie

It depends how the line snapped but if it snapped through normal wear and tear quality control being what it is suggests that the other lines (same age and use) are conspiring to break any time now.

Much better to fork out for a new set of lines now rather than being forked when another line snaps on a bottom turn below the set of the day!

in tricky situations i tend to tie an overhand knot on one to make a larks head and just attach it to a knot in other one and just even out other line lengths any way possible. On my 10m line bar i never snapped a line and never had any sleaving anywhere but jumps weren't really going down..

Double fishermans knot is the one you want. I've been suspended 50m up silos on these. It will hold. However it can be a hard to undo as all fishing knots are not designed to be undone (unlike knots used for rock climbing).

Different knots have different effect on line. There are some that will half the strength and some that will have no effect on it. You just need to know which is which.

Don't knot the line, you can splice it to get a stronger joint without any knots to get tangled.
You need a fine piece of wire folded in half -guitar string is ideal.
Take one end of line insert the loop of wire into the braid about 20cm from the end, work it up through the middle of the line to 10cm from the end and out. Put the other end of line through the loop and pull the loop so the second line is pulled through the middle of the first. Then do the same with the second line so the 10cm free of the first line is pulled inside the first, away from the joint.
This is neat and doubles the strength at the joint. The stronger the pull on the lines the harder the braid tightens on the inner line. Just work the braid loose if you want to take it apart.
Of course you'll need to adjust your line lengths

Sorry to bump this thread, but everyone should read this and learn how to splice a line

It can be done in minutes if you carry a spare "fid" for the job.

Splicing a loop: www.awindofchange.com/splice.html

And

Splicing two lines together: www.bhptackle.com/pages.php?pageid=15

No knots ever!