Why not open mouthed?

Agteach11- I have seen 1 pure Plott hound that my uncle brought in from Texas(owner said he wasn't open!) get let out from the truck and open from the second the tailgate dropped and run about a mile loop open the whole way with 3 dogs following behind confused as sh*t only to come back around and be tied back in the truck for the rest of the hunt! Then we took the same dog on another hunt and after doing the same open loop and coming back was sold to a guy for breeding purposes for 1/8 of the cost that it costs to get a dog here from Texas.

I also have had a friend or 2 bring a dog that would yap when chasing and seen the hogs run like something was on its ass and it knew it!
Then I have seen where a dog would let out a random bark when crossing a trail and my dogs would rush to him thinking he had a pig in sight and then return to check in with me and by the end of the hunt my dogs weren't answering the dogs random barks or when he actually had one ( That didn't go well for him) and wouldn't answer till they heard the pig blow or take off .

I have no doubt an open dog can get r done but from my experiences I stick with the dogs that are silent unless the pig is stopped and it needs you to bring the gun.