The string holds the rest down.When you draw the bow ,the rest goes up.
The arrow rides on the rest for about 20 inches then drops to miss your fletching.
If the string breaks the bow will still shoot.
Ditto. The rest goes up as the bow limbs are flexed downward on the draw. Takes about 15 minutes to put on. Also, your point about the string breaking is KEY. With others on the market, your dead until you get the string fixed.
Either way, you'd love the rest. IMO, it reacts faster than other dropaways that tie into the cable(s). Of course, i guess only video footage of two for comparison is all that could prove it though. So, it still remains my opinion.
Let me know if you want one. I've got a bunch of them in stock for Bowtechs.