Town Hall Fake
Most people build just one expansion town at a time, but instead build
two or more. If the enemy finds one put up a big fight for it acting like
it is the only thing between surviving or dying. Meanwhile use your
other expansion towns to build up and mine Gold and harvest
Lumber.

If the enemy does get this bait Town Hall you will still have
one or more fully underway. The enemy may focus on your main town
thinking that is all that is left which should be defended in the early part of the game.

Don't Give Your New Town or Towns Away
Delay your enemy finding about your new town as long as possible. Do not give your opponent any reason to think you have another town. Try not to lead enemy units from your main town to your expansion town if possible. If you see the enemy has Flying Machine or ground units following turn another direction to lead the enemy away from your expansion town. Also when a Town Hall is destroyed the Peons harvesting Gold and Lumber will then head to the next nearest Town Hall or Lumber Mill (for Lumber). The enemy will most likely know where your main Town is and if they see these Peons heading to another direction (your other expansion or new expansion) they will know what direction to head to find your hidden bases. When your Town hall is about to be destroyed, select the Peons and stop them or head them in some direction other than where your new hidden bases are located.

Game Over Feint
You can type as your enemy is destroying your old town something like "Ok, you won, I'll just let you destroy my town". This trick often works but not against experienced players unless you catch them on a bad game. Often once someone thinks they have won they stop building units and begin messing around. If you are building up a force of units in secret while they have pretty much stopped production and are using what they have already to hunt you down you can build up a large enough force to launch a surprise attack on the enemy. In some games such as force has turned the tide of the game and allowed the defeated player to win.

What You Can Learn
Always assume that someone has a new town when you are destroying their first town. If the town you are destroying is not their only one, and you stop building, upgrading, and expanding your town you could lose. Don't stop mining, building, and training units continue on as if they were still in the game. Never assume a player is dead until they actually drop or surrender. Don't listen or believe anything what your enemy says about being dead until they actually quit. Good players will do anything to make you think they are dead so they can recover. Build plenty of Flying Machines and check all in and around all of the Gold mines to make sure the enemy is not rebuilding.