Plywood and/or fiberglass tower blinds, anchored to the ground and/or to trees aren't going anywhere. They cost a lot more than a popup blind too though.
I hunt in West Texas, and the wind blows a lot here too. The secret to keeping a popup blind from blowing away is to anchor it well. First thing you need to do when you take one out of the box is to throw away the crappy little skinny wire "stakes" that come with it. Buy some heavy duty and long real tent stakes and use those around the perimeter of the blind. Always try to set the blind up next to some sturdy brush, trees and/or fence posts on as many sides as possible, and position it so that you can tie off the external anchor ropes to those things. I also buy some 18" heavy duty tent stakes to use for the anchor ropes on any side that I can't tie off to a tree or fence post. The sandier the soil is, the longer your stakes need to be. Use t-posts if you have to.
Keep the windows and doors shut as tightly as possible when you're not there hunting. That keeps the wind from blowing into the popup, which creates a lot of force. Keep it as closed up and aerodynamic as possible.
Another secret to popup blinds.... Get some flat black spray paint. With the window flaps shut and the shoot-through mesh up in place, paint the exterior of the window flaps and the mesh solid black. That way, it won't look like a black hole suddenly appears every time you show up to hunt and open the window. A black hole that wasn't there yesterday always freaks out the deer (especially if you're set up close for bow hunting). Painting the window flaps black makes it look the same whether the window is open or shut. The deer get used to it, and it's not a problem at all when you open a window. Painting the mesh black also makes it easier to see out whenever there is direct sunlight hitting the mesh. You don't get as much glare with black mesh as you do with camo.
