In general, yes, if this is a bull market, it is difficult to make mistakes on it, and if it is an experienced crypto trader.
Also, you should understand that you will have to enter 90% of the signals, otherwise you will just play at random. Indeed, out of 100% of the signals, only 55 can be positive, and in order for it to work, you need to use everything.
I don't see any percentage on how a signal could have that precise hit of those kind of guesses or presumptions because due to unpredictability of the market then you couldn't really actually tell the odds.
Generally speaking about trading signals then I don't really believe that much because everything is random and following someone with their signals is something not ideal just for me.
It would be rather be better to create on your own.