For field use, this as I noted in the previous thread is a great tool.

Guided Field Sharpener 221

I handed it around the boat last fall while Silver fishing and everyone was impressed. It is not cheap at about $35 but is a great addition to The electric model that sells for around $69 which I'd recommend for a first choice.

I'd agree about the Kevlar gloves, which I have been using for over 30 years.