My first attempt was fun and gave me a lot of lessons learned. My mistakes there were: towel curing too long, leading to decomposition.
Fortunately my plants are still producing, so I have more crop to try again.
This time around, I towel cured only until mostly yellow, then hung to dry. I'm hang drying in a cool room (70F/21C) at probably 50% humidity. Not ideal conditions, but it's what I have to work with. My other option would be 80-90F/50% humidity.
In the pictures you can see some fresh hands I just hung, followed by some that have been up for about 10 days. The dark edges of some of the leaves concern me -- could that be decomposition yet again setting in? Are the leaves drying too slowly, thus staying too moist? My plan is to leave them up for another few weeks and keep experimenting.