While tying flies, especially articulate ones, I use a piece of plastic tube or foam to cover the hook points, so that I don't poke myself. As for treble hooks, try cutting a piece of thick foam (e.g. an old flipflop) into a quarter sized disks, make a small hole in the middle, and slitted one opening from the outside edge to the middle, and use it to cover the treble hooks. Carry several spare with you, in case you lose one. Just an idea. I haven't tried yet.