You usually want to fish a jerk bait aggressively for brown trout. No long pauses like you use for cold water bass fishing. Keep it moving at a good erratic pace and speed up when you see one coming. The high dollar suspending baits really changed the game 10-12 yrs ago, but there are days when a $7 Rogue or old school floating Rapala J-9 or J-11 does the trick. Usually start with a 4.5" (110-112 mm) model even in gin clear water.. You will want several...Floaters, some that run 1-3', some that run 3-5', and some that run deeper. If a brown does not eat the front hook something is wrong with your presentation (pace, size of the bait, attitude of the bait on the pause (flat or nose down on the pause). Rainbows will usually eat the back hook regardless of your presentation. Think that rainbows are just dumb & curious, they are not ambush predators like brown trout.