Need to be careful..."roaring around the lake" and "rallying birds"...purposely... will get Mr Green Jeans attention...
I won't speak for Garrett, but I think the situation I am describing, and the situation the original poster is describing, are situations where I could not imagine a warden ever giving me a ticket. Maybe you don't understand.
I am a guy quietly hunkered down over my decoys, hunting.
Other people -- people in no way affiliated with me -- give up hunting early, and either decide to scout or just go home. Maybe it is a big lake, and there are birds that have rafted in the middle of the lake. In the natural process of those guys going home, or going scouting, they have turned on their mud motor or their outboard, which, let's face it, roars, and in the process of driving around the lake they might cause those rafted birds to fly. Fishermen or sightseers or water-skiers (teal season) could do the same thing. Those birds then circle and fly a half mile, looking for another place to land, and decide on my decoys as a good place.
I simply can't imagine a warden giving me a ticket for that.
Now, if those guys give up hunting and THEY roar across the lake with their guns still loaded and THEY shoot at rafted birds as they flush, that is an obvious violation of the law.