When on the river and float fishing I just feed maggots and corn by hand or with a catty and feed nothing else at all. The ammount and frequency I feed depends on how things are developing, no point chuckin' expensive maggots in if there's no rewards.
If I was to leger I often do exactly the same, unless i'm out and legring when I might use pellets, meat etc, but again I try to feed by hand or catty and guesstimate where my freebies are going to hit bottom, then cast onto or as near to them as possible.
I try to avoid using a feeder and use as light a weight as I can get away with.
I never have a problem with maggots doubling over and masking the hook.
This is typicaly how I load a 14's hook baited with maggots for a lot of my fishing....