So I am also new to trapping. I started 2 years ago, but had a short season last year due to life.... But the crazy part is I am targeting beavers but seem to catch as many otters as I do beavers. What I do is, I walk a creek that's being used by beavers, and I place swim though sets in the creek at choke points. So just look for choke points and place a swim though set. 50/50 it will pick up a otter or a beaver. At least that seems to be my luck. Not complaining. lol sorta want to target otters now my self.... But that will probably result in more beavers. Good luck, just get some iron soaking, and something will turn up.