As to the question of why work so hard to find a silent plott, here is what I'll say. I hunt mostly silent bmc dogs and a few mixed curs. The plotts are a good bit rangier than my curs, and also have a colder nose. That's why I look for some silent or mostly silent hounds. It's rare but when you find em they'll cover out further while your curs hunt closer in. For us it works well.
That's what I'm looking for also. And why I'm looking. Thanks!