Just don’t use the prong at a dog show. I’m pretty sure they aren’t allowed on the grounds. I know this is true at trials.We use a prong and a slip lead. To give an example of how a slip lead could be detrimental: we went to a dog show on a slip, just to walk around. I couldn’t get good control and after the show our dog had blisters around his neck from pulling on the slip. On the prong, with proper placement, he never gets to pull like that and it is much easier to correct him if he starts to get excited.
Our dog looks forward to wearing the prong and the slip, but I use the slip when I’m more confident and then transition to a flat collar.
Our training has been a work in progress so take everything with a grain of salt