ORIGINAL: KodiakArcher
I've always thought the G5's were the easiest head I've ever sharpened. Using large Arkansas stones I have little trouble getting them scary sharp. I think the key is to only push them straight down the stone along the center axis of the head (no side to side or back and forth motion) and to decrease pressure as you get near finished with the hard (white) stone. I finish by stropping them on a piece of heavy weight paper (business card).
I sharpen mine the same way and have good results. I put pressure on them for the first few passes, then I lightly glide them on the stone to put a nice sharp edge on them.....works for me.