You don't need stoned characters, all you need to do is make a party of one from the airship and have the character cast vanish on themselves. The enemies won't be able to touch you, except for the Crawlers who do have a magic move that will knock you out of Vanish state and hurt you pretty bad. As long as you only walk on the green grassy parts of the map you won't encounter them.
is this crawler deal on the grass near dinosaur island? or in the same area i talked about near doma castle?

again thanks