Seeing as fish seem to be the flavor of the week for discussions. I thought I'd weigh in with an idea I had for bait. I found it a bit frustrating to get enough entrails when butchering animals.
So solution:
Let us mash left over meat, intestines and entrails into giblets for bait.
I think it'd be a handy way to deal with all the extra carcasses I have from when I'm out trying to acquire combat skills and just hunting for fun.