you do the same thing with casters as you would with maggots. eg catapult or throw in by hand on waggler and on the pole , pot them in or catapult. The main thing is for fishing shallow is little and often, eg 6 casters every 30 seconds and do it like clockwork.
Just because caster is used on the hook dont mean you need to feed caster getfishing. Same goes for if your fishing maggot on the hook you can feed caster, i know many top anglers that feed maggs and fish caster on the hook as 9 times out of 10 it picks the better stamp out. But if you just have casters the feed caster and fish caster on the hook or meat can pick out the better fish[:T]