I've thought about this a bit. Not sure how easy it would be to setup docks with DC chargers. I think it would be better to install 240v systems at individual slots like we do with our garages at home. My dock already has 120v for random stuff. That would be just fine for my pontoon if it were electric.That will still work... at the lake... recharging my eBoat. Slow, but something, maybe more.
OT - Has ANYONE talked about chargers at lakes? Boats don't mess around. They push the carbon and heat directly into the water and without catalytic converters, not some passive process with gas cars. It's 96F water temp in the Florida Keys. What?
The big power boats will remain gas for a long time I think.