You're talking cliches that you've probably heard from some LP owners. What do you think will happen if you enter at $1, exit at $0.90 and then the price goes back to $1? You will make more profit than those staying in the pool. The problem is that this price movement would require someone to sell all the way down to $0.90 and then buy back to $1.
Ask yourself how do you call such guy and you'll know why it can't be consistent.