5th String Capo Spikes for Banjo - Called Railroad Spikes
If you can install these banjo capo 5th string spikes or "tacks" or have them installed then this is a great way to go.
Sliding capos have been seldom used since someone came up with this idea of using these capo hooks.
Most pickers use the 5th string capo spikes like these to capo up the 5th string on their banjos.
5th String Capo Banjo Railroad Spikes - reasonably priced 6 for $5.95