Haven't done it with sunflowers but have been into big multi species bonnet high covers with the Claydon , leading disc makes all the difference. I do conceed the disc drill will move alot less n leave the armour alot more intact .
if your using a Claydon with a leading disc then I wouldn’t really call it a tine drill any longer
when I say a tine can’t cope with big trash I mean a drill that just has tines