Personally my favourite position to watch is :- me lay on my back , Lisa on all fours above me, pussy above my head, then when the Guy enters her pussy I get the perfect view, also I can lick her clit and the guys balls if that's what he wants.

Wife and bbc
 

Love watching her doing a guy doggy style while she is sucking another one

I would have too
 

He gave me a good description but not the same as actually seeing her taking him.. She was in her early 40s at the time and I will just say he was of legal age in Ohio.