First am not a pro trader, but my trading techniques have proven fundamentals. I recycled around Bitcoin and some handful of good altcoins; I trade with a hand full of funds since altcoins and the bitcoin market move in the opposite direction; I fill my bags with altcoins when the alt markets are down against Bitcoin and sell them when the market is on the rise to buy bitcoin which will be on a downtrend at that moment.
This technique has worked for me over the years.
How on the Green Earth that worked man?
The scenario in 2020-2021 has changed completely mate. The correlation that you are saying no longer works. All the altcoins do follow the same pump as bitcoin do. I mean there is no inverse proportion now a days. If bitcoin is pumping then altcoins are also pumping at the same time.
Moreover there are many many altcoins who don't even rely on the bitcoin movement since they have created their own economic environment and they play within that boundary only.
It could be just your good luck or time when things turned profitable for you. But, you must recheck your strategies beforehand now.
Bitcoin and altcoins are heavily correlated, we all know that but they do not move at exactly the same speed and we can clearly see this is the case, at the beginning of this bull run most of the growth was concentrated on bitcoin and that is why its dominance was going up almost everyday.
Now we are seeing the opposite with altcoins growing faster than bitcoin and taking away some of the dominance of bitcoin, so even if both altcoins and bitcoin move on roughly the same direction the rate at which they do is different and that can be enough to produce profits with the right strategy.
Well, I'd say you do have a point. Though Bitcoin and altcoins are correlated with each other like if Bitcoin pump altcoins will do as well and that would be the same if it dumps but not all the time and not on the same phase. I mean, Bitcoin and altcoin are not moving in the same phase it is more like altcoins kinda late or something. Within those time gaps, that would be the perfect time to do that strategy what OP had been doing, that will be the time to make a trade and generate profit.