Well let's be honest, anyone with cash and 1/2 a brain could have made 200-300% profit easily.
The problem in here is that if bitcoin crashes, no one is going to believe in the other altcoins, and probably they will die too.
The same happened on the last time that there was a good crash on the market regarding to the China ban over bitcoin.
It was not a real crash, but it was a huge dip.
All the altcoins went down, and really downnn, more than -15% in just a day.
If this is your plan to "escape" from the real crash, then you have less brain that those who are putting all their money on bitcoin (just in the context that you explained it of course)