Without doubt the helicopter bolt rig is the best stillwater roach set-up.
The question really is, what bait do you want fish with it – maggots or mini boilies?
Maggots rule in the depths of winter when the fish are far less active, but small roach become almost suicidal on these natural baits once we get to summer.
Mini boilies will select the bigger roach
Switching over to mini boiles and swapping the maggot feeder to a groundbait feeder will be much more selective for the bigger roach.
Phil Spinks knows a bit about catching big roach from stillwaters