How to Cook Perfect Pork Rinds/Skins?

Today at the supermarket, I bought 20lbs of pork skins (with fat) for $.20 a lb thinking I can make tons of pork rinds just by frying them. That was not the case. My first batch were not crispy and airy like the ones you get in a bag at the gas station. Although they were delicious, they were hard to chew and if I cooked them a minute later, they would of burned. I have my family here each making up ways to cook em, no one has an idea and nor do I. I just couldn't resist 20 cents a lb. Now I have 2 huge bags of pork skins in my fridge.
How to Cook Perfect Pork Rinds/Skins?
try rubbing them in oil and salt....then cook on oven tray for about 25min on about 230 dgrees and see how ya go if they still aren't crispy enough reduce temp to 180 and check every 10 min