It's a great idea to get some practice in but it's highly recommended to do it on water, not on land.
The conditions on land can lead to unexpected behavior.
Take out the boat and enable crew watcher on your phone.
Attach one of your beacons to a buoy, throw it overboard and follow the app's instructions.
Why not test on land?
If you ware to trigger the alarm on land, there is a good chance the homing signal will be picked up from over a 100 meters. While on water, that range will drop significantly to about 10 meters because the signal is getting absorbed by the water. Thus the app will indicate a false 10 meter proximity on land.
Although not very functional you could get a feel for the MOB compass on land by breaking the connection.
Leave the beacon at the house, take your bicycle and head off. The app will guide you back at the point of lost connection. Please note: this distance is much greater on land than it would be on the water but you can drive around and see how it feels. The bike will about match the speed of sailing boat which will help with your GPS accuracy (compared to walking)