When apprenticing under a master photographer more than 50 years ago, the first thing I was taught was that any print regardless of what it was intended for, work print or what ever had to be spotted before it left the finishing room. A spot in a print shouts to me, "whom ever made the print
was too lazy to deliver his/her very best"! Just my opinion! Charlie......

Anyone can learn to spot a negative or print. The best method bar none to "spot" is to eliminate it in the very beginning! Take the extra time to clean your holders before loading them. This is a source for the black curlys. White curlys only happen on negatives that have not properly been
cleaned, brushed, blown off before printing, or dust settling on the printing paper before exposure. Most all spots can be eliminated before the final print. Also ground your enlarger.......................