Predictions are just guessing what will happen to price, we cannot predict the exact price of the bitcoin because of its unstable price. Like what happened last year, people expect that the bull run will happen last december but there is no bull run that happened.
Not just guess-work. Predictions should be derived through strong technical analysis and due to many peoples are just blabbering what strikes in their mind, many people are not having good opinion about predictions and speculations. Even we cannot predict the exact price levels, we can approximately sure about where the market will be turning around. This is how usually predictions are working but only with the help of God, you may find exact predictions by foreseeing the future.
if you want to take advantage of existing predictions then maybe you can use it by taking the price in the middle of the predicted.
You mean you should not wait for actual target to be achieved and you should like to book in the middle itself ? You sound like you're good but this way you cannot enjoy all the long markets as you will be securing your capital in the middle itself. I understand this is a safer way of trading but definitely will be less profitable.