I don't run a lot of drowners myself for coon anymore. Whether dry or water sets, I run an 18" cable with an earth anchor on end of chain on a #11 double jaw, and have had every coon I've caught still waiting for me when I get there to collect the goods. I use a lot of swivels in a short chain. The #11 is tenacious in holding power, and with double jaws I get a nice holding surface with very little room under the jaws for foot damage.
This is almost exclusively what I run now for equipment setup on my foothold coon sets.