I have one and I like it a lot. Very deep, hits hard and has a great discrimination circuit. Use it for a little bit and you'll hear those sweet deep "whisper signals". It works great in freshwater and on land. It couldn't be easier to use either just turn it on and go.
On the beach you're going to want to be in or out of the water, try to stay away from where the little waves wash over the coil.
The key to this machine in any condition is the Sensitivity setting, think of it as the ground balance. wherever you are whether it's in the saltwater, wet sand, dry sand, dirt park or fresh water, turn the sens up as much as you can without the machine chattering/ falsing. I will check the setting several times during my hunt as the conditions change.
An example of the sens settings by me here in NY are 9-10 on dry land, dry sand. 8-10 on the wet sand and anywhere from 5 to 8 in saltwater, Jersey beaches have some tough mineralization so the numbers there are 5-7. The NY beaches are a little better so I can get 6-8 in the saltwater. I usually never turn the discrimination past 3 or 4 when I'm in a trashy area, I've hunted some clean Jersey Shore beaches with the disc at 0.
Very easy to pinpoint with using the X method once you've found a target.
Good Luck!
Glenn