Identifying female bass

Hi Lads,

Do any of you know a way to identify female bass?. I would find this very helpfull in selecting a fish to take for the pot which happens on a very rare occasion!

Cheers
Mike

"Most fish weighing more than about 5 pounds are female.

Bass start to have their greatest appeal to sporting anglers when they reach about 10 years of age, and weigh between 4 and 7 pounds."

http://ukbass.com/seabassandfishery/sizeandage.html

dont know any other way??
Anyone?

Another good tip a soft fat belly means a fish with eggs or would at least point towards that it would have, if there is any Bass that have to released it would have to be them!!!