The advantage of hedging your position is that: 1. You'll have no risk from that point, if done correctly. 2. You could add positions if the market continues to surge and make extra profit. 3. No one knows what the market is going to do, it's always a process of probability. So if the price does go up to the last high, and then crashes down, I'm still risk free and could even add more short positions to it.
You could also hedge by going long in one stock, and short another stock which is correlated to the one you went long. You then expect one stock to do better than the other.