Ahh...that makes sense with the packing tool. I have been using an old pair of needle nose pliers to pack the hair back towards the bend in the hook. I also used a wire stripper (basically pliers with a hole in the jaws). The wire stripper works pretty well if you hole the strippers up near the hook shank.
I also hold the hook (at the bend) when I pack the hair. Somehow I feel that I am less likely to jab my packing hand into the hook when I do this.
I tied some flies tonight and the packing went well enough. Then I put the eyes on in such a way as to make one fly look a little cross eyed. Doh!