An interesting strategy. I am of the opinion that you need to buy some coins and keep them until you reach a certain goal, then sell them. This is not necessary to do with bitcoin, you can also use altcoins.
It's how some of my friends do it, they buy some coins and park it and let it sit for awhile and watch the prices, hodling is pretty much the same as this one since it tends to get long-term instead of a short-term stint, if you aren't good or don't want the hassle that trading has then you should probably do this.
This style of trading requires absolute discipline and patience because it is not that easy as a trader to wait for that long term before trading there is always an urge to trade consistently, personally as a day trader I do see many trading opportunities based on my strategy and can't wait that to execute it, if that work well for the OP I believed other busy traders can emulate that style of trading of course the OP had proven it profitability in a long run however the main problem is not knowing the end of a dip when to buy.
for short term trading, it is more difficult to put it into practice. requires skills as you describe. but for long-term trading, it seems easy, we buy and hold it until it reaches the target, but this is not that easy anyway, when floating plus, sometimes our psychology is disturbed by the emergence of a lot of debate in us, whether to hold or sell it. therefore even though it looks more relaxed, in long-term trading also requires a well-established psychology