I have read where a person can take fish remains and grind them and use them for bait by freezing the ground fish in cubes with the hook already in the frozen fish. I have some questions: 1. How and when do you put the hook into the bait. 2. Is the barb of the hook exposed. 3. Obviously, you have to change hooks every time you rebait. What is the best way to handle rebaiting. Can that be done without taking the time to retie the hook. 4. How long does the unused bait last before it is too thawed to use. Any helpful information would be appreciated. Thank you.