I'd be hesitant to agree to a new tax for such a lofty purpose. Kinda like new gas taxes going to improve roads, and we never really see an improvement. Based on what I've learned, local governments in NC have very little power compared to what those of us in the NE are used to.
That being said - if I truly believed that end result would save the OBX, I'd gladly pay the extra tax. But we'd have to be careful not to raise taxes and fees to the point where lower and middle class folks can no longer afford to visit. As it stands now, there's a nice mix going on, from relatively poor to the super rich.