Need some help from you experienced folk. Was fishing today and I would sneak up from behind on a group of 15 or 20 trout facing upstream. I'm about 30ftback and fish are relaxed and remain in place. Water is about 2 to 3ft deep and gin clear not moving that fast. Trying to be careful not to line the fish and focus on trying to target the back few fish and try to work my way up to the head of the group. Fishing an egg and an olive wooly bugger at the time. Everything great, make the cast and it's spot on and all the fish scatter because the bugger and egg disturb the water too much. The pinch on indicator probably didn't help either but the bugger definitely landed hardest. Any advice as to flies that wouldn't make nearly as much disturbance? Midges? Anything else? Any suggestions in terms of approach and application? Thanks in advance!