I tried plylox and they scratched my window frame to bits!!

Plylox were also hard to setup because it had to be cut perfectly and as we all know windows are not always perfectly straight. In fact, they are usually slightly off making it harder to keep the locks straight and tight.
Another problem I find with plylox is that the plywood can only be 1/2" and it's just too thin. I've also found that using plylox to secure plywood on a larger window is not very stable at all.
I've found Hurricane Panel Locks are able to secure corrugated metal (which I used on my house) and plywood both easy and fast! I had no trouble aligning it and the Hurricane Panel Locks are a VERY sturdy and secure locking device. Once they are up they are not coming down until you take them down and they won't destroy your home like hammering or screwing plywood always does.
If you want to know where I got them here's their website.
http://www.hurricanepanellock.com/videos.html
They have video demonstrations on their webstie and it sold me. I have them installed and I am ready to go.
Thought I would post this and let others know about this new option. I looked for a long time for something to get ready and something affordable since I can't afford those expensive shutters.
Let me know what you guys think!