I have had a awning unravel because of strong side winds in our deserts, It is not pretty. Back then I tried all the home made inventions that have been discussed here and none worked really well and were cumbersome to use.
As others have said it is a bit tricky to get the hole just right but with a little thought it can be done. I found that after I installed it on the arm then taking the awning down a time or two and marking the roller each time I came up with the best place for the hole, it will change a bit if it is hot or cold when putting it away but I have always got it to latch in.
You asked about a Carefree awning, my friend that suggested I put the
Awninglock on my new awning has a Carefree and has had one on his for years with no problems at all.
I would never have another awning without one of these.
