For any type or eyes, I tie them on first. I make a couple of figure 8
wraps and then I wrap the base of the dumbbell several times; keeping the
thread above the wire of the hook. Then a couple more figure 8's. So 2
Figure 8's - 4 circular wraps at the base - then 2 more figure 8's. Then I
use hard as nails on the top and bottom thread. I then complete the rest
of the fly. By the time I get back to the eyes, it is fairly solid. Then
by finishing up with a couple of firgue 8 and base wraps, it is pretty
solid. This way there is not as much build up. I also use 8/0 trhead as
well. I know it may be too thin - and it takes some practice not to break
it.