It wasn't cast at showing fish, but one of my favourite fish from Brackens was a 2 tone heavily scaled linear.
The lake rules are no free bait can be put in by catapult or throwing stick, the only way to put free bait in was with PVA.
I put in a load of my 'BIG' stringers, there is a picture somewhere of one, but I think it was 30'ish casts of 30 bait stringers. Within 10 minutes I had the linear at 28lb. That is just after plenty of disturbance, those stringers with a 3oz lead made plenty of noise. To be honest, I was baiting up for the night, not expecting a take in the middle of the day.
On the same lake, it was a small lake of 1 1/2-2 acres, if fish showed or rolled, it wasn't worth casting at them, they were very aware and would disappear. You could however land on them and get some pretty quick takes within minutes of casting.