I've heard the old saying about 90% of the fish will be in 10% of the water; just wondering if there is any truth in that ole tail?

And if so, just how far will fish travel when on a good sized lake say 20,000 acres?

With today's technologies I would like to see more RF tagging to put some solid answers to these questions.

In fact I'd like to do a little on my own so I could just go straight to 'em.