...I consider better strategy to invest in these coins than for example in coins with more liquidity but it is very difficult to make a x10 ... especially having the option to put a stop loss to limit possible losses ... what do you think?
There is no doubt that some altcoin can grow 10 times, and also that some other altcoin will grow 100 times, but the problem is that it is very difficult to guess which particular coin is worth investing in at the moment. Therefore, there is such a strategy to buy a little bit of new coins that are just entering the market. Perhaps in this case you will guess with the investment and get a big profit, but you can also lose your deposit.
Of course it is very difficult to guess. With what you suggest, my question (and probably also OP's) would be: How do you select your "new coins"? There is such a high number of new coins coming out every month, it's impossible to invest in all of them and still expect a positive return in the long run, so there have to be some criteria you guys use for pre-selecting them.
I don't think stop-losses would be effective as the whole market is very volatile and new coins don't tend to be very liquid for trading. You wouldn't be happy if you sold all your coins after a -50% and then the coin goes x100.