SWL,
You said: "Splicing Octoplait in 4 pairs is essentially the same as splicing 4 strand."
I have never been exposed to 4-strand rope, so after your comment I did an
Internet search - and it looks to me that most (if not all) 4-strand ropes are just like 3-strand, except with one more strand - they are not plaited/braided ropes like 8-plait or 12-strand. All of the strands are the same "hand" - not 2 one way and 2 the other.
Obviously, this will affect how it is spliced!
Hartley
S/V Atsa