That what whales do, just follow and join certain groups, they will give you a heads up when is the best time to buy and sell not just Bitcoin but other coins as well. Rather than making a group of small volume of people which has no impact on the Bitcoin when they tweet, why not join the big one instead.
That is if you know where to find one because most of this groups that you are trying to patronize sometimes are in it for the quick cash grab from the people that will be joining their group for nothing which should have been obvious in the start. Also following a certain person should have the criteria that they are active and interacts with their followers because if not then there is a low chance that they are going to sway the market.