London volatility system-GBP/USD-5min chart

Anybody tried this system?

The following rules are for short trades,
but the strategy can be reversed to trade
on the long side.
Setup:

  1. The pair makes a new range low at
    least 25 pips (a pip is the forex equivalent
    of a tick, or minimum price fluctuation)
    below the opening price after the
    early Frankfurt/London trading in the
    GBP/USD rate begins around 1 a.m. ET.
  2. The pair then reverses and trades 25
    pips or more above the opening price.
  3. The pair then reverses once again to
    trade back below the intraday low established
    in step 1.
  4. Sell a breakout (at least seven pips)
    below the London low.
  5. Once filled, place an initial protective
    stop no more than 40 pips above the
    entry price.
  6. After the market moves lower by
    the distance between the entry price and
    the stop, cover half the position and trail
    a stop on the remainder.
    These simple rules position you to
    profit from common behavior that can
    occur in the pound/dollar when the
    London/European market opens.

Rationale is to use London volatility to catch the first major move of the day.Any thoughts on th epotential success of a system like this or what may be needed to refine it?

No trade yesterday.Successful short trade today on my demo system 20 pips in short time.Im going to review the rules as Im not certain I conducted the trade 100% correctly.