I'm watching Alt coin/Bitcoin charts from 2013 to 2019, i will tell you most important things what i learned from it. 1- You cant buy the exact bottoms or sell exact tops. 2- You cant buy right before breakouts. 3- Dont start accumulate before all the well known indicators shows you "its right time to buy" for example weekly EMA-MACD-RSI-OBV 4- Never buy all in any Alt coin. buy daily piece by piece 5- You should keep it mind. your belief will be tested. 6- Never keep your Coins on an Exchange more than 4-6 hours. be obsessed about your coin's security and always use cold wallet. 7- Dont wait EMA-MACD-RSI-OBV confirmation for taking profit. 8- Take your Profits when Bullish Momentum starts losing steam. sell hourly piece by piece 9- Dont be obsessed about selling at top, most of the time you will have another shot. 10- Dont buy back or atleast in same week you took your profit.
Best indicator for top : When you really feel amazing about your gains, refreshing your portfolio every five minutes, you think you are very intelligent person and you cant wait to share what you have done with your loved ones; "VERY STRONG SELL"