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.
This technique still work for you for years untill you find The real altcoin which you can not sell it back because of the small cap they have. Or you just trading againts bitcoin againts top 10 altcoin ?
For me trading againts btc using only USDT is better then altcoin.