What happened to 200 series Cruiser Timi??
Why not just use that to tow??
I'd be worried about the weight of the boat behind any of these vehicles.
It's not just about towing capacity. It's also about not having the weight of the boat push the vehicle off the road if something happens.
3.5 tons is a lot of weight to have behind any ute (that's empty, or even loaded but gcvm may dictate that) that anyone has mentioned here.