How do we repair this oops that hubby just made?

My first thought on seeing the post was, where was the spotter?

The repair is not difficult. Time consuming, but not difficult. Fiberglass repair is not as mysterious as many believe. You Tube will be your friend. The nice thing about dealing with fiberglass resin & cloth is that you can sand or grind out your mistakes & do it again.

If not doing the repair yourselves take it to a boat hull repair place. A good tech there should have it repaired stronger the new & invisible.