If the trout aren't rising, you'll have to search for them. This is easily done in one of two ways. When you're fishing from a small boat, canoe, or kayak, try drift fishing with a nymph and your sinking-line rig. Fish a size 12 or 14 Hare's Ear on a short leader tapered to 5X, for example, and cast or otherwise pay out about 60 feet of line as the breeze pushes you over the surface. Essentially, you'll be slow-trolling your fly as you drift across a cove or along the shoreline. Strikes can be gentle plucks but are more often good, hard pulls. Don't leave your rod unbraced in the boat, in which case it could be yanked right over the side.