This simple boat is quite uncomplicated to print and is fun with or without the motor.

Due to the appropriate size and the relatively low weight, however, it accommodates the wind-up motor and this therefore has sufficient thrust.

However, if the boat is too empty for you, you can simply print the EASY 13 Printable Jointed Figure, as I did as an example, and add an absolutely ingenious moving passenger as an option. I have also created a very simple alternative rear bench where you can clamp this figure.

I hope you have a lot of fun.