Please be warned. Whatever works for me may not be suitable to you. Trade at your own risk. As of now my account is up to $1440 already with $706 closed profit and DD of $450.
In the first part, you say you open 0.2 lots on the top. What means top for you? how do you know when it is on the top?
You will see a group of buy orders on the top
range 
of the price. Anywhere between that I'll just put a sell order with 0.2 lot.
What would happen if it didnt retrace?
It will retrace at the present situation. But If it didn't retrace, your sell order is among the buy orders, so it's on top, I'll open a buy order with 0.2 lot to
hedge 
it. Ultimate aim is to build up the closed balance so your equity will keep increasing hence, won't need to worry too much on
margin 
.
In the second part you said, that you open a hedge
position in the middle of the gap.
For example we have been winning with buy positions for a long time now. and
the retracement beginns. and we are in the middle of the gap. Would you open a new buy possition in the middle of it? and whats the size?
is the bot going to open 0.2 by itself?
Yes, I'll open new Buy orders and also new sell orders too. hence the
hedge 
. Even if the bot were to open new position, it will not be bigger then 0.1. I have the bought open a buy position w 0.08 lot right after i open a buy 0.2 lot. But it eventually went even higher and it closed with profits. Before going down again to close my sell with profits too.
All these are done during Asian Session. Because its always or mostly trading in a
range 
.
Sorry i nearly got your idea, but it's alil bit confusing for me at the moment.
thanks for the answer[/QUOTE]
Hope this help. So far so good for me. But you have to always try to balance your buy orders with your sell orders. Try not to open too many position in 1 direction.
All being said, you'll still get your account wipe out in a very bad day if you are not too careful with your manual trades.