Just waaaaaay too simple for a one shot install.I have successfully used gorilla tape over the butt joint - it holds so tight it is easier to just snip off the end than remove it.
Yes, the idea is that the burred cover buts into the cut back end of the core. Then you put in tie stiches to lock it all into place. I did not watch that video and I do not like the way they whipped the line, so I replaced it with one like the way that I do mine. They are really handy because they are very supple and slightly smaller than the standard line so that they pull through the blocks perfectly. Go back to my previous post and watch the new video link.Hayden. The whip secures both the buried cover and the core at the site of the whip?
It is not to be confused with an eye splice because it is not designed to be a high load slice. It is plenty strong enough for pulling in lines and would have more strength than your typical messenger line.I will try it on the next two halyards I am replacing.
Do you leave the eyesplice in the line, or do you cut it at the whipping?
Any issues with the end getting hung up on something?
The problem is the direction of the line IF you have a class 1 or 2 splice on the end that you connect to the sail. What you could do is cut the old top end eye splice and put in a reeving eye into the top end of the line and then pull in the new one. IF you are tying knots for your halyard shackle, it does not matter.I am spitballing here, but could you pull two halyards with reeving eyes by putting a 1ft length of messenger between them?
I assume you tie the messenger to the reeving eye.
This is one of the reasons I now use knots and not splices. The other reason is so if the point of connection becomes worn, I loose less halyard simply cutting that off and tying a new knot.The problem is the direction of the line IF you have a class 1 or 2 splice on the end that you connect to the sail. What you could do is cut the old top end eye splice and put in a reeving eye into the top end of the line and then pull in the new one. IF you are tying knots for your halyard shackle, it does not matter.

Awesome suggestion, I didn't know I needed those scissors until your post... ordered a pair just now, only $15 !Great suggestion @Joe .
I have added these scissors to my bag.
Miller KS-1 Yellow Fiber Optic Kevlar Scissors
View attachment 237780
Safer than the ceramic knife I have been using. Go through Dyneema like a hot knife through butter. Maintain their cutting edge.
Might also add a couple of curved needles to your ditty. A stitch in time saves nine.