The best technique for building a strong crypto portfolio is to mix things up.
Survival in this market landscape is reliant on adaptability.
you choose what to do depending on how we see the market.
Sometimes you buy and hold for the long term, other times, you take short time trades to get big profit.
I Also take some calculated risks on new projects BTC
this is not an investment strategy. I always discourage people to follow "the fashion of the moment" unless there are some important aspect that can help you to prevent from a big loss.
a lot of altcoins project are created ad hoc just to drain out resources ... they want a good coin (like btc and eth). In charge you get some altcoins of dubious utility.if you buy "garbage" you have "garbage" even if you mix up.
Just as example, take collector sector.
There are some product that were collected with a strong market or catalogue (check below minicheck or phone card if you're young)
https://en.wikipedia.org/wiki/Miniassegno Now all of these products are definitely worthless.