From what i have observed, when bitcoin is pumping, altcoins are dropping, at least in their bitcoin value. When bitcoin is dumping, alts also dump, and usually even harder than BTC. When bitcoin is moving sideways or slightly up, altcoins usually shine. There are always exceptions, but most of the time like this. If people want to make the most money, they should be trying to acquire more bitcoin, not more dollars. The dollars will come with the more bitcoin.