Cutleryotehunter, Nice going on the cat.
IAyoteHNTR, I park my truck maybe 300 yards from the cabin and walk in when I stay the night there. I do however park the truck beside a gas well that's on the farm, to break up the outline somewhat. As well, there are trees inbetween the cabin and truck.
I'm not sure how much the truck might affect the coyote hunting, but I suspect that it won't be much of an issue at 350 yards. As DoubleUp mentioned, it might be good to try to park it near trees, buildings or objects.
Good luck with it.