Hyperlon
I’m calling bullshit on that. Here’s an article from motortrend showing it has a towing range of just about 100 miles. I’ve seen that backed up by numerous other tests. https://www.motortrend.com/reviews/ford-f150-lightning-electric-truck-towing-test/
I’ve seen references to the ICE getting 9-10 with a 23 gallon tank. That’s more than double the range with a refuel time being an order of magnitude faster.
Batteries in trailers would help. However now you have a battery to tow, which would still have an impact both because of stopping and going and the DOE estimates for each 100lbs extra weight in your vehicle, your MPGs gets a ~2% reduction. Additionally I would not recommend strapping a battery to a boat trailer unless you are sure it was waterproof. Even then it would make it sink into sand easier.
Trailers have a habit of cutting the range by 66%. Someone I know has an EV and tows their bikes to a nearby city. They have to charge mid trip in both directions. That’s unacceptable to me and a lot of others. I’m fine with a vehicle with 300 miles of range. But 100 miles of range to tow a boat? I wouldn’t make it back without a recharge. Probably two charges because charging stations wouldn’t be anywhere near the lake in rural areas. So in that scenario I would have to give up boating for an electric vehicle because I’m not about to do that.
This isn’t like the consequences of adding a water filter means you now have to change a water filter every year, this is something that would turn a vacation into something unenjoyable. Meaning it’s a decision that would make you give up that type of vacation if that’s your only car. It’s a sacrifice not an inconvenience.