Len, when the lights go out, let him go to sleep. Then at 2AM in the morning, scoop him up or even scurry him right into the net. It's evil, but it works.
Funny thing. I came home today to find my big angel moping around and not cruising the tank as usual (the small angel is still doing his thing). I think she has a stomach ache! :lol: She looks great; very fat, no torn fins, or diseased scales, etc. ..... just lethargic.
BTW, centropyge argis are probably the cheapest dwarves and I still have not had a single problem with mine. I've also read many accounts that they might be one the most reef safe dwarf angels. So, some statements here are misleading.