New guy with a Garrett 300

[PecanJohn]

I just got my early Christmas present, a Garrett 300. My first task is to find one of my property markers. I just spent about two hours hunting for it with no success. I've found barbed wire, pop tops, a drink can, and many very small pieces of wire. I am hoping to get some suggestions of what settings to use to aid my search. I thought a big iron/steel spike should be easy to find.
Thanks,
John,
Grand Bay, Alabama

 

[Skillet]

Should be 1/2" dia rebar

I'd get a chunk of same, scan over the end, notch that in and everything else, notch out.

Shouldn't be deep

 

[John-Edmonton]

It should red somewhere in the left of the screen in iron. You can notch out all the icons (small black squares) from the pull-tabs to the right on the screen. That should make it easier.

 

[John-Edmonton]

This should help ONLY looking for iron. Good luck!

 

[slingshot]

I would think it would be easy in all metal and just listen for a low tone grunt.