SPEED DETECTING (Good for short hunts)
(1) Use both machines,
(2) Scan the target and pinpoint, (don't scan 10 or so times like on YOUTUBE just to hear the machine beep!)
(3) Dig your own target and use a hand-held pin pointer if you have one, to quickly find the target.
(4) Don't waste time cleaning targets in the field, that can be done at home. (None of that - what's the date on that stinking Lincoln? and 10 minutes of cleaning)