Downsizing your bait is probably the biggest change you need to make to catch more trout, bait is the best way to put a good catch of spring trout on the stringer, but lures have their advantages, too.
An angler, skilled enough in fishing artificial lures is able to put his lures in front of more trout than the bait fisherman can, and thus will often catch more trout than the bait angler.
Another key to catching spring trout with spinning tackle and artificial lures is to know the importance of each lure that you are using and how good it actually is under spring water conditions and where and how to fish them for best results. As always, check your local fishing regulations, especially for trout, sometimes there is an artificial only rule or a single hook only rule you have to follow when fishing for spring trout.
An in line spinner is always a good choice for trout. A flashing spinner imitates a small minnow, the major forage of big spring trout. A properly designed spinner triggers strikes by its flash and sound. The wide, slow-revolving, Colorado-type blade is preferred to the thin, fast-turning willow leaf-type blade because the wider blade emits more flash and sound for the trout to home in on, an important consideration in discolored or roily water.
Carry spinners in 1/32- to 1/8-ounce sizes and in several blade colors for spring trout. Under most conditions, a silver spinner will match the silvery hued minnows trout prey on, i.e., dace, silver shiners, and smelt. In discolored and/or turbulent water, gold, chartreuse and copper spinners are also effective.
Spinners dressed with a hair trailer seem to produce more strikes than a bare hook spinner. This is probably due to the fact that you are hiding the hook and there is more to eat for the fish.