California and Covercraft no longer make-sell evolution type covers or Noah
Warranty claims were massive so discontinue them.
Been this way since before Covid 19.
Said even if I wanted one with no warranty no materials to sew one up.
As far as the OP questions
I remove the anntenna.
Indoors I Have Duststop and 2 Moving Blanket from Covercraft.
Covercraft is source that makes all the Moving Blanket car covers and is sold by others. So if you buy a Moving Blanket cover from California Car Covers it is just bought and resold

Indoors I usually use the cheapest covers I can find and only put them on a clean car.
I always take antennas off both indoors and out. You're only adding one more hole for dirt or water to get into and it makes it easier to get the cover on and off without damaging anything.

Covers from California Car Covers are all made by CoverCraft..
1 problem I have had with their car covers is their internal liner material can leave a heavy film of dust... Makes little sense to cover a clean dust-free car than remove the cover only to find another layer of dust from the cover.
I did buy an lite-weight indoor cover for my RR from California Car Covers that was made out of like a nylon material and it didn't leave any dust layer...

Just my $0.02...

The powder you are seeing is the water proof part of thed material degraded as time goes on it will increase greatly.
If used inside will leave a fine flower type substance on the whole car.
In used outside will stop repelling water.
It is why they no longer sell them at the larger name brand companies

Yep it really wasn't a problem. At first I was kind of unhappy they didn't include that, but realized it was simple. I ended up putting folded towels at the two front corners because the car I was covering had sharp corners there and I could see it wasn't going to take long to cut through the cover with wind moving the cover just a little (and wear off paint). I also had to throw a towel over Pentastar hood ornament to keep from tearing cover.

I don't believe that to be true as this https://www.calcarcover.com/ California Car Cover company was making covers was around years before Cover Craft. Cal Car Cover was around making and selling their own multi material custom fit covers under the name Beverly Hills Motoring Accessories way back in the '70's. I'm going to have to check this out. Could be but would be surprising to me.

EDIT: WOW Cover Craft has been around since 1965 so you're probably right never knew that

Mike

Ok, what’s the best for outside?

MIKE:
I know what I said was true...
Note that originally both brands were located in SoCal, their main buildings were only a couple of miles apart in Northridge almost next door where I worked for 16 years. California Car Covers does do alot a marketing and advertising but is only a distribution center. Back in the days they were the go-to-guys for car covers but now there is much more competition. Jim DeFrank(founder of CalCovers) originally ran some quick Superstock Hemi cars under DeFrank/Cohen but now mostly his sons run Cal Covers.

Just my $0.02...

When I bought mine top of the line outdoor one was the Cali Covers Weather Shield. It was good for sure but pricey! I paid about $600.