yes there are a few lines of plotts that produce closed mouth or semi silent dogs my last plott was tight mouthed but she was a grade dog not sure on her blood lines . the older cur type plotts produced alot of tight mouthed dogs . then the coon hunters got ahold of them and drove the cur type people underground with not letting them register them because of color . they want these big brindle houndy looking dogs we got today . but there are still many out there . i think the weems line is of the more old type plott and produces alot more tight mouth dogs than other . maybe hillbilly or arrowbar could tell you more about them .
Thanks