One thing that's not yet been mentioned but should be considered when parking your plane in any desert environment; You should consider
not putting on your cover when the wind is blowing dust. Having spent my entire life in the Antelope Valley (Mojave Desert), the wind
blows and it blows
dust/dirt/grit everywhere.
I recommend against using any cover in the desert with high winds as this grit
will get under the cover and the chafing (scratching) begins on both your plexi
and your paint (from the straps vibrating back/forth).
Our plane spends quite a bit of time on the ramps in Las Vegas, and depending on current conditions and forecasts, we'll leave the cover
off....but we will use the cover to 'cover' the panel and the upholstery on the inside. We also leave the canopy 'cracked' (and locked) about an inch so the interior doesn't go into 'oven mode' during the day.
I'll accept a little dust on the inside before worrying about 30 knots winds when I'm trying to sleep miles away from the plane

Rosie