Ada ,You never know how a fish is going to take a worm. Just have a hook(s) which matches the size of the bait. I'd usually go for a Pennell with more than 5 or 6 inches of bait.
Fish attack baits in different ways. With a cod, for instance, the bucket mouth is often used as an exercise in fluid dynamics with a large volume space (vacuum) being created and a gobful of water and particles being 'sucked in', bait included. It would barely matter whether the worm was head or tail-first hooked.