As a rule of thumb they can be Josh, but when the water is cold in the early part of the season this changes alot. One such place here I took my kids to a trout tournament just for kids. Parents were helping the smaller ones casting and all..They put in 150 trout in a netted area for them to fish and all in all only 5 trout were caught that day. So yes even stocked trout can prove difficult at times, it all depends on water temps.. There is a set of 3 lakes up here they stock with trout, the biggest is yearly while the 2 smaller ones are done by even and odd numbers of years. Some will tell you how they like to bite while others will tell they wouldn't bite a thing. I like fishing them with a worm laying on the bottom with no movement at all. If any movement it should be as little as possible as trout are feeding on bugs that are not moving much at all, as the water is still very cold for much action.