That's the great challenge... I've come up with only one contraption that worked for only one set of struts I had and that was to use a socket within a deep well socket that had a "top nut" (similar to a spark plug socket), allowing me to use an extension for the inner socket and a wrench on the outer socket. Next set of struts had different size nuts and I could not find a similar deep well socket for that size... so, that's why I ended up using an impact wrench instead, along with torque limiting extensions.
The impact with torque limiting extensions seemed to work fairly well; however, maybe somebody else here will have a better idea.
The impact with torque limiting extensions seemed to work fairly well; however, maybe somebody else here will have a better idea.