What about 'criuisers'?
During high summer back in the UK, you could often see large carp cruising just subsurface pushing a big bow wave. Anglers would target them with a floating bait. There were many homemade 'secret formulas' and commercially available options.
Any cruisers over here? How about a deer-hair floating ball 1 - 2 cm diameter?
When sight fishing, look over your shoulder from time to time, you never know who's behind you