In order for insiders to make money they have to use the info they have. If they buy or sell securies in any great amount, this activity will usually show up on the charts.
You make the rules as to when you will take a position. When you put on a position you are betting that the market will move in your direction. You don't have to say how much you are willing to bet. All you realy commit is the brokerage fee. You should have a point where you want to exit for a loss and for a profit. Once the position is on it's up to you to decide when you get out. You don't have to wait for your stop to be hit and you don't have to take your profit when you said you were going to. Try that in any game of chance.