I spared us the rowing experience. [ The oars can rest where they are. Using magic in such way is almost too mundane, but there is another reason why he's doing it. Looking up at the moss, to see whether it reacts to the spell.

Will it grab at them? Just move a bit? Or nothing at all. ]

Such an enchantment is an easy one, and since the direction is pretty much decided for us. I just gave our boat the tiniest push.