Ok, another dumb question for the experts on here....
My son was sailing today and this gave way on an old NCX....
At the end of our session I noticed that my old Hellcat may soon suffer the same problem.....

So, can I use one of these to replace that factory part?

My concern is 1. whether the RADZ part is designed for that purpose and has the strength to do the job?
And 2. The curve in the hook is not ideal and possibly impossible to thread through the webbing due to the angle?
Or are you meant to get a sail maker to do a proper job and replace it with the same part which I assume would involve unstitching and restitching to install an identical pulley?
Plenty of hours use left in both sails.