Take a piece of stainless wire, make a bend in it like you would normally do for a line tye on a thru-wire plug. Instead of straightening out the wire to insert in a plug, cut it. You now have a loop with an open end. Tie the bucktail or whatever on the length of wire like you would for a siwash hook. Slip the loop over the tail loop of the plug and close with pliers. Simple, cheap
Give me a minute and I'll snap a photo or two.
Jigman