Warning: rabbit hole ahead.
Colin: I read your text for your workshop. All useful stuff and you do say more than "treat your partner as a neighbour".
Re Michael Fuerst's quote, I agree that end-effects are what they are and they are not (necessarily?) the point of the dance, but they sometimes must be dealt with head-on. Example: I have tried to make any sense of the end effects in the dance The Hobbit http://www.quiteapair.us/calling/acdol/dance/acd_283.html . I think it's a great dance - if you can avoid the ends - but I'll be [darned] if I can make it around the end successfully. I've tried calling it, walking thru at a callers workshop with several experienced dancers and none of us could make sense of the end-effects. We were missing some magical key to understanding (perhaps guarded by Smaug). "Go where you are needed" wasn't going to work. Nor were the other rules. Sometimes, it seems, the end-effects must be taught just as the dance. No easy feat.
I'm not sure that dancing with ghosts is the best way to deal with end-effects - I prefer "treat your partner as a neighbour".
I have a whole section of notes on End-effects at https://colinhume.com/dtendeffects.htm Colin Hume