a couple of comments on your sets:
You said the water was clear and fresh beaver cuttings everywhere. Are you really sure the beaver are there? Typically if there are active beaver the water behind a dam will be dirty from their work. Clear water is a bad sign unless maybe it is rocky and no mud to stir up.
Your bobcat sets are at least to my eye in poor habitat for bobcat. Too grown up, not very suitable for small game. Not saying a cat won't wonder through but certainly not as often as say an area with more small game. Probably was great about 15 years ago.