Dont always blame the audience,...On any gig including a NH you as the entertainer need to really be in charge of YOUR stage and keep YOUR audience in an attentive state,.... it works both ways like a battery charging off each other, ...
if they are bored with YOUR performance that's your fault, they will drift to something else.
Give em the WOW factor!! Don't be just like the other guy up there!!! If you do it right you will a big difference.