RE: Bob Ragsdales reasons for a String loop.
I shot one during the few years I shot releases. If I ever go back to release, I'll put one back on the bow. A few of Ragsdale's reasons are a bit - open to discussion - but I definitely agree with most of them.
One of the main suggestions I can make is to keep the string loop heavily waxed so it will be stiff. Makes for a quick and easy hookup and the wax lubricates the loop and reduces wear. You don't have to replace the loop but once or twice a year, depending on how much you shoot. Maybe even less often than that.