here is what usually happens:
- bitcoin goes up > altcoins get dumped
- bitcoin dumps > altcoins get dumped harder
- bitcoin stays stable > altcoins get pumped

you should hope for the third option to happen. and the reason for it is very simple, in both first 2 options traders are always in bitcoin market either picking up cheap coins or making profit or shorting,...

but when option #3 happens, they look for an alternative way of making money. and that would be altcoin market and the pumps in it.