Remember, we have 2 workers chopping in the capital. You can maximize production by waiting until one of them has 2 turns remaining, then switch production to a Settler. After two turns and both forests are gone, switch to some other unit; likely an axeman. Keep working on the axeman until the first worker has 2 turns remaining on his 2nd forest. Then switch back to the settler for two more turns (switch by selecting a new settler to build -- the original settler will move to the head of the queue. you can then delete the new settler) Some folks call this an exploit, probably because it's so powerful. The bonus chop hammers go only to the settler. Meanwhile, the city grows while it makes progress on the axeman.