Unhooking Interrupt

You can, it's just really difficult. Try to predict when the person goes for a unhook. If you're lucky you could grab them. Otherwise, they become a one hit and have no chance of escape.

Typically I find the animation cancel does not show them lifting the survivor from the hook. Paying close attention and when they start lifting the survivor up and off, you can time it so they cannot cancel the animation and guaranteed a grab. It takes some practise but after a few tries you can get it down.
Otherwise just do what @JanTheMan suggested.
I have to add that once you grab the Survivor, drop them as quick as possible because the others will hook dive and unhook the other survivor if they are ready for the grab.

@tehshadowman33 said:

@Killigma said:
Typically I find the animation cancel does not show them lifting the survivor from the hook. Paying close attention and when they start lifting the survivor up and off, you can time it so they cannot cancel the animation and guaranteed a grab. It takes some practise but after a few tries you can get it down.
Otherwise just do what @JanTheMan suggested.
I have to add that once you grab the Survivor, drop them as quick as possible because the others will hook dive and unhook the other survivor if they are ready for the grab.

So basically, once the hooked survivor starts moving, go for the grab. Because by that point, they'll be locked into it and cannot cancel?

Yes, pretty much. Once you get the timing down you will have less issues with hook diving. As I said before, just be ready to drop the grabbed survivor asap because chances are another survivor is ready to hook dive right at the back of you. If you have any issues drop me a message and I'll share an example if I can find one.

@tehshadowman33 said:
Naw. I'm good. It's just it was obvious this swf had practiced mindgaming with their unhooks. They would alternate between who would try. It was sooooooooo annoying. Two of them had instaheals, so even if I had dropped one, they would've healed up.

Yep, welcome to playing with the "super elite p0wnzers" of the game. Oh yeah, btw, make sure to follow their rules such as this guy's

@JanTheMan said:
If someone goes for an unhook hit them (don't get fancy a try to go for grab, since this only works against noobs). And hit them again after they get the save. You can slug and go after the rescued guy afterwards. As for swf hook swarming, just be glad they're not gen rushing you.

So they can continue to have fun at your expense