Thats good that the daddy helped out, and of course he deserves a little someting for that haha. I love and hate those kind of situations because at first your all paranoid and sketchy, and then when things settle down the endorphins start flowing and you jus feel sooooo damn good.
dad should get like an 1/8 or a quarter ounce. he did save you guys from getting busted. sounds like something my parents would do. i've been smoking outside in my shed and i've had uncles who don't know i smoke stop by. mom/dad will call me and say something like " so and so is here so don't come in." so i just chill out there and smoke a little more until they call back giving me the ok to come back. you gotta love parents/family who are cool with you smoking and help out.
EDIT: Sorry it all has too go it was too incriminating and I'm under survailence apparently! Not sure if it is true but better safe than sorry!