Risks.

If you are playing with this indicator using 20,000 deposit having the rule not to open the order if S/L level is more than 2 or 5% of your deposit (daily) you are not risky man.

But as we stated above Ishimoku indicator is having the 4 signals which are not equivalent on strength. In most cases the first signal will be most faint and further signals will be more stronger. But the most stronger signal will be the last one. The probability of the signals to be real ones defers in 15 - 20 % from each other.

Thus the first signal is the most profitable but with the great probability to have S/L (for the order to be closed on S/L without profit). More risky.
Some people using 0.1 lot to open the order on the first signal and 0.4 for the most stronger signal.