Leaches will not stay on. I've tried them and they come flying off in style, sometimes whacking you in the face!
Cossack, here's what I responded to your post at Excal.
Cossack, I use Fast Flight string material and leather gloves reinforced with duct tape. The reason for the Fast Flight is because you need to serve the whiskers on crazy tightly to the string or it will move and will not be as affective. Fast Flight also lays flat so it does not cut the rubber like end serving would.
The reason for the gloves is to prevent string cuts.
There are 15 to 20 wraps and 2 of these, one on top of each other. Three rows is good too.
The serving has 5 knots to tie it off. The first one is done with 3 wraps to make a know as opposed to one like a regular knot. Then on the opposite side of the string you do the same thing. On the opposite side a square knot is made. Then another square knot beside the first. I then force a 3rd square knot between the first two and then lay 5 more single knots on top of the last square knot. Burn/melt the ends down to lock it all.
Bee's wax is good to give the gloves grip. Practice, practice, practice. Anyone is welcome to call me if they want help.