It really depends on what I'm fishing for. Eels in the tail about 25% from the tip. For Stripers out one eye and work them like a plug. That reminds me I need to get a couple.
For spot there are several ways I hook them and depends on the size and what I'm fishing for also how. On a bottom rig(fishfinder 90%) small through the nose, mid size in the lower portion of the tail(just back of the anal fin) or just in front of the dorsal(larger baits).
Minnows it almost always through the nose.
I hope this helps.