I don't think so. A car parked their WITHOUT a boat trailer would, IMO, be automatically suspicious and probably reported. This is not a place to leave your car to walk anywhere- nothing in the area to walk to. It is also NOT very isolated- it is a public boat ramp with a small playground and picnic area and small wooden walkway on the river for fishing. There are houses all around it, in fact the playground is practically in the back yards of these houses. It would be very quiet in the middle of the night of course, but if somebody left a car there thinking it wouldn't be found for a while they would be very wrong.