Agree with previous posters - if you encounter a wind strong enough to pull a magneshade off, you have much, much more serious issues to worry about. Due to the way Magneshade is designed (mesh material, VERY strong magnets holding it at several places onto windshield), it is very, very difficult for wind to ever pull one off.
We bought a Magneshade for our MH as soon as we got the MH home, back in 2012. Been 3 years now, and its always worked great. Wind has never even budged it, and we camp frequently at the beach where there are some pretty strong winds.
You really can't beat it - Goes on and off very easily and quickly without having to climb up on anything, no ugly snaps to deal with, completely transparent from inside, yet very effective at blocking sun light and heat. I wouldn't want to camp with a MH in a lot of sunlight without one.
As for the theft risk: You leave a magneshade on a MH when its parked in storage, you kinda are asking for it, not much mercy for anyone that does that. Ours stays folded up in a storage bin when we're not camping. The magneshade only comes out and goes on when we're camping. Never had or heard of a theft of these happening, when a MH is at a campground, camping.
Will and Cheryl
2021 Newmar Baystar 3014 on F53 (7.3 V8) Chassis ("Brook")
2018 Jeep Wrangler JK ("Wilbur")