Well generally I go for an early spear, not as the first unit, but the 3rd or fourth, putting a miner on mana early. When eco can support itself, I start buying spears, but only send out 1-2 to where the rest of my units are (archers and maybe 1 sword). This makes the enemy think I have a decent eco, but am going for the general spear archer meric build.
The next trick is to fake some rushes, holding the main contingent of spears back. If they go for a turtle early, apply a few shinobi. If they instead do the usual spear archer strategy, when they pull ahead in terms of army and charge your frontal force, you pull back those units and have the rest of your spears meet up with them. Rush the archers instead of the spears and take them down. If he garrisons them , kill off eco. If he garrisons all units other than spears, you can either try to pick them off or just continue pressuring. If you manage to get him to garrison long enough early on, your eco is far superior.
After he pushes your spears back with his army you've been holding prisoner, pull injured spears back. Have a Giant queuing asap. When your new builds come out to defend with a few other units, attack again with the giant and a few spears. Spears rush the archers and the giant eats up the spears. Rinse and repeat.