Yet another concept that looks good from an engineering standpoint (protected waters ground effect, not necessarily the electric aspect) but forgets that the environment gets a vote and that if you scare the $&@! out of your customer base generating repeat customers will be a challenge.
Maintaining 20’ AGL in a long swell period Pacific may be quite the up/down ride or may not achieve the ground effect performance goal…in the stormier Atlantic seaboard the “intimate” ocean experience of flying thru whitecap spray is going to be a lot more “exciting” than Aunt Mabel is prepared for.