I've only done a few LAS cooks on my E6 so still learning how to optimise it.
I agree with Dan that an air gap seems sensible between deflector and drip pan.
Using Minion method the centre of the deflector is a hot spot, especially in the first few hours.
The drippings vaporise or the water boils off very quickly when sitting on that hot spot.
I put a couple of bricks on the deflector and the drip pan on top. Only concern is whether I'm restricting airflow around the meat.
I like the crumpled foil idea but I guess the bricks also act as heat sinks.
Latest cook, last Sunday was my biggest and longest. Four boned pork shoulders (actually collar) for street party pulled pork (God save the Queen!)
I foiled the deflector plate and had just one drip pan in the middle - no water.
That much meat created its own steam and compared to the two I had on the UDS they cooked slightly faster and took longer to set the bark. Presumably due to the moisture coming out of the meat.
I used my old CyberQ Wifi and a Pit Viper fan. I found it best to set it at 235f to allow for variations. I wouldn't say it was rock steady but it was always within acceptable range.
I started with a full 4kg (9lb) bag of Weber Briquettes. After 12 hours I did add some more, although it may have lasted long enough. Future long cooks I'll start with more.
I had intended to let it run to the end without wrapping but with people expecting food at a specific time I wrapped to ensure it would be ready.