I was a staff instructor at NPTU about 1.5 years ago. Then, as I am sure it is now, it was horrible. "Not a shore duty" was a popular catch phrase. NPTU NY can be just as taxing on a family as being on a ship.
Justin is correct prototype has its own unique challenges and they can be quite stressful. Shift work is taxing on both the Sailor and family and the stress of being an instructor can sometimes be overwhelming. There are some that really like it but most I know don't. I did it and I hated it and refused to go back. Now for those out there that want to know how not to get orders to prototype all you have to do is mention Enterprise,,,
Detailer: Your going to prototype and that's it. I have nothing else.
Me: What's open on the Enterprise?
Detailer: You would go to the Enterprise?

Me: Absolutely if it will get me out of going to instructor duty
Detailer: But you have already served a tour on Enterprise didn't you learn your lesson then?
Me: Yes and I would still take it over instructor duty.
Detailer: "The clouds have parted, the sun is shining and God himself has smiled upon me someone has volunteered for CVN-65" true statement
Me: So that means I don't have to go to prototype?
Detailer: I will fax your orders right now,,,click
And I went back again after that tour,,,God I loved that ship. So my advice is stay at sea if you can because wiping the noses of students and dealing with the political BS just ain't worth it. Stay safe and good luck