After watching the 1st Korda video's to me it was clear that hooking a carp was a lot harder than you may think.
I remember reading something about a fish that hadn't been caught for years and was presumed dead, it was spotted feeding with its tail right up , feeding this way is going to make it much harder for the hook to take a hold .
Whether a carp can learn to feed in a way that helps it eject a rig or it naturally feeds in a way that helps is possibly why some carp do not get caught that often while still putting on weight.
In reply to your question i shudder to think how many times you are picked up and dumped , it does tell me that for all the fancy tackle above water all the expensive alarms the matching reel handles don't mean a thing unless you get the £2 worth of bits spot on at the other end of it