That is sweet. Boat and rover is a great place for Herelink to improve things as well. While most concentrate on Copter and Plane for these things the All in one really suits a boat/rover application.
If fitting one into a rover as we speak.
I really have not done a range check of it yet. I do know that the surface of the water tends to cause problems with all this equipment being so close to it.
Water has its drawbacks, but also tends to have good line of sight, and little other RF.