I recently found out about a new system that prevents boat corrosion.
The system is called SeaBis Electrolysis Corrosion Prevention System.
This system is apparently the first of its kind that detects and
eliminates stray current and actually prevents corrosion. Once the
system is installed and you have completed a process of elimination of
stray current coming from in and outside the boat, the boat is then
protected once and for all. Any new stray current is monitored and
when it turns up it is eliminated and the boat once again is
protected.

The system also comes with an anode voltage tester and prode to
measure the effectiveness of existing anodes. Anode lifespan is
prolonged up to 2 yrs with this system.

Is there anyone out there that has installed this system or has a
better or another way of preventing corrosion damage to boats?

More about the system can be found at http://www.seabis.net