Bucktail

[snake River]

Personally I don't use bucktail fishing or very little since I mostly use feathers, but you could use them on any size jig and see no reason if you cut it short enough and use less material to make the tail, you could put it on a 1/100 oz. jig. I see nothing that keeps you from using it if you want.

They make flies using bucktail so don't see anything that says stop on some small size or it will not work.

Skip

right on skip we use hair 1/100oz.