Pleased with the results of how a single coil would work in a Drip box, large chamber high airflow vents and all, I dug out my Dovpo Topside Lite, quickly rigged it as a squonker, fitted a similar ( inelegant mind!) coil to my spare Kanger atomiser and have to say I'm pleased with the result.
The Dovpo does seem to hit hard watt for watt so I'm running it at 12 instead of 14 watts now