I've separated a couple hoods from the nose piece without destroying either one. I used a heat gun and putty knife. With the hood upside-down heat one side at a time while working the putty knife down the seam. Once the adhesive gets hot enough it will start to let go. Once the sides are done flip it over and work the top apart. Take your time work slowly but don't over temp the fiberglass. If it starts turning brown your using too much heat. I bonded the hoods back together with Hysol EA 9359.3 epoxy. Check aircraft supply sites on the net for this epoxy. It's even John Deere green.