As you approach the top mark, try to adjust your control lines for the reach ahead. You can take many places if your fellow competitors are fiddling around in their boats as they round the top mark and are not looking for any puffs. Remember that being so light the International Moth accelerates very, very rapidly so even just a little puff can make quite a difference. Do not raise your centreboard as you would in other classes of dinghy. Ease the cunningham and outhaul but increase the kicker tension slightly more than you had coming upwind. You will also want to move well forward in your boat, but do this with caution, in the boats with pintail sterns you will find that you can move too far forward, sinking the bow in excessively as there is very little buoyancy in the stern. Try to keep body movements and sail trimming to a minimum.
It is possible to achieve greater speed by gently rocking and sheeting the sail. This is inadvisable because if you are relatively inexperienced you will probably end up capsizing and it is actually illegal! The general excuse that helms use in this situation is "my boat is so unstable that it is the only way to stay in it". This is seldom true and is just a way of cheating, why not use a paddle or an outboard motor? Neither of these means of propulsion is particularly practical in a Moth anyway!
Tight reaching: The best place to sit is generally about half way along the wing bar trying to keep the front of the boat just in the water. Play the main constantly and try to keep the boat heeled slightly to windward.
Beam/Broad reaching: Sit right at the back of the wing bar, if the nose is still digging in when the wind gusts try, to hike at an angle off the back. Play the main in and out in the gusts so the boat is dead flat. You may have to weave around to prevent the bow digging into the wave in front, bear away going down the back of the wave and luff up just before the front of the boat reaches the troughs.