If you go to the hardware store or car part store and get a small vacuum hose, you can slice it longways, then use it as a trim piece around the hole you cut, hiding the jaggies.
a lot of it comes down to the products used. The sponge they're using it cut into grids which helps it give way and not grind contaminants into the clear causing those swirls. Also, the polymer based rinseless wash will help encapsulate the dirt and rinse it from the sponge super easily...
Looks like the next one is April 12th at 13208 Midlothian Tpke, Midlothian, VA 23113
That's the good one. Kenny runs the one that was at regency and moved to stony point, but he's turned it into a cash grab.
Ceramic won't prevent swirls/scratches, only good washing technique will do prevent those.
I'd recommend looking into rinseless washing. Makes for easy, quick, swirl free washes.
The foam canon pre-rinse is optional and generally only used when the car is super dirty. You can do the same...
Most of those were spray-on coatings, they're more of a "ceramic light". They typically only last for 3-6 months. Actual ceramic coatings applied with an applicator will usually last anywhere from 3-5 years, or longer.