I've been having problems with them coming off the hook on the cast. I use light/medium wire circle hooks size 7/0. I hook them through the back near the dorsal fin, Is it better to hook them through the mouth or maybe through the nostrils? How about through the belly near the anal fin? Any tips would be GREATLY appreciated- the herring are scarce and when paying $2 each, I don't want to just "fling" them back!