Not really a coarse float fisher and sounds like your using very light gear.
Could be...
Too many split leads on line.
Weight of line or current pulling line and float under.
Hollow float ? taking on water and gently sinking.
Bored fish taking the piss :)
Didn't say above but had such a great time, 3.5hrs went like 30 mins, will definitely go back. Wasn't too many shots on the line (5?) but my float is hollow so maybe that's it. Fly fishing sounds very hard!
Had a few fish steal my sweetcorn without me reeling them in, even that was great.
Not really a coarse float fisher and sounds like your using very light gear.
Could be...
Too many split leads on line.
Weight of line or current pulling line and float under.
Hollow float ? taking on water and gently sinking.
Bored fish taking the piss :)