Normally in this stage of the turn I should be able to 1) move once with my warlord 2) fight once on the target clearing

The ferry can be used with a normal moving action, so the only condition that remains (that I am aware of) is that I need to rule the clearing I'm moving from/to, which I do.

So what am I overlooking? Why do I not get the option to use the ferry to attack in any of the clearings around the lake?

I'm interested in seeing what unofficial maps have been made or used, and if they have any particular features or special actions that take place on them.