Never did get the hang of a whip finisher, but then I learned to hand finish when I learned to tie. I do three double half-hitches by hand on most flies. Down in the smaller range (ie: 18's and smaller) I use a half-hitch tool, which is nothing more than an old mechanical pencil tube.
Been tying for almost thirty years now and this method works for me. I don't glue most flies due to the finish knot, with the exception of when I use mylar as a wing-case or something similar and I'll add a drop of cement.
Kelly.
Tight Lines,
Kelly.
"There will be days when the fishing is better than one's most optimistic forecast, others when it is far worse. Either is a gain over just staying home."
Roderick Haig-Brown, "Fisherman's Spring"