Steel bridges get mine. I can pass under 17' bridges, so there is some serious steel seriously close. That's what will get mine. A high rise or open swing or draw is ok, but for safety, hand steer there.
For those with wandering AP's, a good tech can dial in the gain, reset, etc parameters and really improve performance. I learned to tune mine, but it was not easy. A bud with a 43 Scarborough lived with sloppy ap for years, finally got a whiz tech to tune it. Bingo, rock solid. I might even get that tech to tweak mine, even though it seems ok. The autotuning leaves much to be desired.