A bit of both for me.
I use mine a lot for access to flats and then wade fish but I also fish from it in certain areas - particularly shallow estuary mudflats where wading is not an option. The great thing about this type of area is the Kayak is the only viable means of access and as Nick said, long distance casts are not required. I sometimes drift across a shallow water area looking for fish and then anchor and wade or fish from "the boat".
When sight fishing, look over your shoulder from time to time, you never know who's behind you