>I thought turning off a layer just hid it from the view

Outside of the autorouter that's true. Under Tools/Auto/General
you set Top to N/A

Also, in the Eagle directory there's a Single-sided example. What
that does though is what Denny suggested. A Restrict Layer is put
over the Top Layer (which has been already routed) and the auto
router works just on the Bottom Layer

You can also set either layer to N/A and re-autoroute the other

Joe
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