I’ve been trying to find this too, saw the one on the bay for £60 odd and one on amazon for £2.5k (yes you read that rite) I’ve also messaged me peck himself asking where to get a copy but no response 😐
Yonny, It was more about the unwaxed stuff gripping pop ups better than the waxed variety when you tied them on...as you say I wouldn't think the wax affects the fish it's the physical properties that were important
I recently took it off and went back to the Fox submerge leadfree leader for my fishing on the reserve due to so many snags. I watched a near 30 suss my set up out whilst stalking on there. I think I’ll be going back to the avid stuff after witnessing how this fish took a good hour circling my spot before doing the off.
I made the same thing nearly 30 years ago with a pike float ... lead on bottom to keep anchor , It was like casting an angry monkey out ... rig bits spinning etc , hope its improved ,
It comes from Sainsbury's and mine is so old the 'best before' date has long gone😉
I also use braid hooklink materials for hairs as crayfish can't cut through it as they sometimes do with dental floss.