Dogcoin is a great coin. Now on my opinion it is worth buying it, the price is good. It is possible to make x2 exactly, just need to wait
Having plenty of time can make you reach that x2 profit that you have been targetting. You need to be patient in terms of doubling your money with dogecoin.
Before there were several runs that made dogecoin pumped and those lucky people that bought it at dip celebrated as they just didn't get a x2 profit but more than that.