I feel the same way, I find it disrespectful that the audience can interrupt whoever may be talking in the debates, especially since they have a time limit to answer and/or respond. This is for the position of the presidency not a freaking game show..
I can’t stand hooting, hollering, and booing at a debate either. Doesn’t matter who the candidates are. I find it annoying and distracting.
Here's a different perspective... The nominating contest is one of the few times that Americans have the opportunity to directly interact with, and express themselves to those who would deign to be the nation's Chief Executive.
Once these people ascend to the heights of elected office (especially the presidency), they're effectively insulated from the voice of the people, and are much more difficult to reach.
We're supposed to have a government "of the people, by the people, and for the people." I think it's entirely appropriate that we have an opportunity to add our voices to the mix in the public debate leading up to choosing our nominee - even if all that amounts to is applause in an auditorium.