First bands EA version

I wrote the channel based expert advisor using the Bolinger bands indicator as the channel. The first results were good in one week and still the same problem. It's not robust.
The idea works in one week, and in the next it fails.
I changed my trading idea and played with it using the Bolinger bands as the channel itself.
I performed a back test of 25 days and it looks good.

Strategy Tester Report

Bands_v2

OANDA-MT4 Practice (Build 432)

Symbol		AUDUSD (Australian Dollar vs US Dollar)
Period		15 Minutes (M15) 2012.08.01 00:00 - 2012.08.24 16:45 (2012.08.01 - 2012.08.25)
Model		Every tick (the most precise method based on all available least timeframes)
Bars in test	2710	Ticks modelled	221514	Modelling quality	90.00%
Mismatched charts errors	0
Initial deposit	10000.00
Total net profit	1417.80	Gross profit	1950.00	Gross loss	-532.20
Profit factor	3.66	Expected payoff	27.80
Absolute drawdown	176.60	Maximal drawdown	437.90 (4.27%)	Relative drawdown	4.27% (437.90)
Total trades	51	Short positions (won %)	48 (77.08%)	Long positions (won %)	3 (66.67%)
		Profit trades (% of total)	39 (76.47%)	Loss trades (% of total)	12 (23.53%)
Largest		profit trade	50.00	loss trade	-67.10
Average		profit trade	50.00	loss trade	-44.35
Maximum		consecutive wins (profit in money)	18 (900.00)	consecutive losses (loss in money)	5 (-242.30)
Maximal		consecutive profit (count of wins)	900.00 (18)	consecutive loss (count of losses)	-242.30 (5)
Average		consecutive wins	8	consecutive losses	2

Pros:

• High profit factor - 3.66

Cons:

• Low volume - around 3 days per day

TODO:

• Add money management (right now it trades with a fixed amount of lots per trade)
• Think of a smarter target picking (right now it's fixed take profit)
• Test it with other periods - robustness check
• Try lower time frames
• Optimizations

Exploring the channel

After I developed an indicator that detects the support and resistance lines of the last X bars I tied it into an expert advisor. If those lines are has a similar slope then it is a channel.
I ran a few back tests and the channel detection functionality looked fine. Then I wrote the expert advisor and tweaked it according to a few visual back tests.
Then I had a problem: I am expecting that a really good EA should keep the results statistics. It should not keep the profit factor the same but if the idea is logically right then a profitable EA should stay profitable along the time line. This one had really good results in one week and in the following week the results were the opposite.
I tested it on time frame of 15 minutes. It created around 20-30 trades per week. It means that the strategy won't be profitable every week. The market will trade in linear channels in one week and then it would break them out on the next week.

Conclusion: I developed a great indicator that may be embedded in another trading strategy or as manual trading tool but it can't hold the strategy I've been looking for.

I didn't give up on channel trading yet. My next shot will be designing a trading strategy based on Bolinger band based channels.