Questions; Do they dump the pool water or reclaim it below? She stabilized? Some beam rolls while running in the video,, or to fast to stabilize?
With such little information, alternator model numbers (in & out), no schematic or ships install diagrams,, it will be hard for anybody to answer...
I am concerned that you have been reading that drool from das other web site. Just because a few folk agree on a rumor, does not make it correct....
There is not much that needs a boost from a proper dock electric service. AND, Nothing is free. You want Volts, that takes Amps. W/A =V will not...
Something not mentioned and not discussed much because it is a sad subject; If you have a grounding issue, this IS a safety issue and should not...