It's not really the same sort of technique. What I'm referring to is a sort of Onmyoudo, it works in more natural elements and conditions. That being said, it would not intefere with flames or feathers. If the incantation is performed correctly, the mist will part way for flame entirely, as well as anything else balanced for as much. Though I think the agent I mentioned works with actual water to create her fog... Still, that shouldn't be a problem. If flaming arrows could pass, so could these flames and your feathers.

And I'll be honest, I'm becoming a bit frustrated at your disregard for cooperation under any terms but those explicitly your own. We all have a stake in this, and it would suit you to put some faith in my ability as a tactician. I assure you, while the very plane of fighting on water is not my specific area of expertise, it is not unstudied. Furthermore, dealing with trained soldiers is also not unknown to me. And no amount of professionalism and training can hide every weak point, particularly when you have access to certain advantages in terms of scouting and reconnaissance that your enemy does not.

I may seem young to you, but I am well over fourteen centuries old. I know what I'm doing and would prefer you not disregard my ideas outright. If you need a way to make Navy ships to appear as pirate vessels, I can find a way. But you need to also put some faith in what I have so far as well.