I have a predator blind (Dick's Sporting goods) and it's not the high dollar kind but it does the job. I've had it out for 2 weeks and actually hunted in it last friday night with winds around 20 mph with gusts up to 30mph. As long as you have it staked down properly you should be fine. Plus "brushing" it in will help keep some weight down on it and help it not blow away.
...and on that day when my strength is failing, the end draws near and my times has come, still my soul will sing Your praise unending, ten thousand years and then forevermore!