I would have voted for
Hypnotised. Honourable mention for
Coming Home which has grown on me lately for some reason.
Going a bit off-topic, but there may well have been other songs that Bob played bass on- this from a Q & A of his:
"I played bass on quite a few Mac songs ;"Revalation", and "Keep On Going" come to mind."
http://www.fleetwoodmac.net/penguin/qa/bobwelch_qa2.htm.
I wonder what the other ones were? Can anyone tell? It's a little chink in the Fleetwood-McVie legend when you think about it...