HI, I have used the brass ferrule system with stainless wire. By the way I cut my own ferrules from tubing, much cheaper.
I feed the wire through the ferrule, loop through to the hook , and then tie 2 knots and leave 2 or 3 inches of wire spare, do not let it un-weave itself.
I then force the ferrule down over the cut spare wire and over the tied knot. You can pull on the shroud and the spare wire so that the knot does not displace. Then drip some super glue down the ferrule to clamp the knot.
Suggest you do a dry run first.
To make a nice finish get some white heat shrink tubing and put this on the shroud wire first, cut to size. When all above finished slide the heat shrink down over the ferrule and warm enough to shrink but not burn.
You could also follow full size practice by whipping some suitable thickness fine white cord and cover the whole join.
hope this helps, regards Roy