At the current moment in time, electric paddle boats are amongst the most functional electric vehicles while at the same time being amongst the least cost effective.
As far as functionality is concerned, you can get an electric paddle boat today that is way better than any combustion-based boat of the same kind. This is because people that want engines on their paddle boats are people that want something that is easy to start in case they don’t feel like paddling anymore. For that particular purpose, electric engines are better than combustion engines. That is why electric paddle boats are already highly functional in their particular niche market.
When you take a look at the cost effectiveness of an electric paddle boat, what you will see is that they are far more expensive than gas powered boats for doing the exact same thing. This is largely a function of the fact that electric paddle boats have yet to really figure out the best way to put a battery on board ship. This is a larger problem in the push for electrification, but current trends in the electric paddle boat industry seem to show that this is the next thing to be fixed for electric paddle boats to gain more market share.
In spite of this rather significant drawback, electric paddle boats continue to remain competitive with their combustive counterparts. In this market at least, it appears that though electrification of the most popular vehicular models is proceeding ahead of schedule.