Why I have choosed 2% is a good guestion and I think there is still room to adjust that. First I tought I would go for 5%, but then tought that it would be easier to get three times 2% than one time 5%. But it is plausable that the best percentage is still "out there" for me to find.

I know what stop loss means, I just don't want to use it. For long and slow decrease I can make the decision myself, for very quick one there is high probability for correction upwards.