With a spread of three flies trying one egg fly would not be a big handicap. Since I have no commercial interest in my fishing I don't mind passing on my method of attaching beads.
1. Burry the hook bend and some shaft in the jaws of the vice.
2. Heat the exposed hook shank with a small butane torch.
3. Slip the bead over the heated hook and immediately pull up.
4. The heated metal will melt itself into lower part of the bead hole thus preserving a better hook gape.
5. Having the hook bend and point inside the vice jaw stops the heat moving down the hook bend and preserves the integrity of the hook. I have used this method of years and have never had a hook snap of straighten because of the heating.
6. Once you are set up the whole procedure takes less than a minute. The hold is very secure providing the shank is melted deep enough.
Lastly do these beads work? You bet, they certainly do when I am nymphing on the Tongariro.