There’s a rule for fitase and a rule for Olympic skeet about gun down which refs should pay attention to , and warn shooters of any flouting of the rule . Other disciplines sporting ect shoot how you want , unless there’s rule against it . It personal preference how you shoot gun up or down , but I think this so called cheat method is an insult to a shooter there's know cheating about it . Isn’t that what the ref is there for to make sure everyone plays by the rules