Does anyone have an idea of how to make the boat, like the one in the stage musical Phantom of the opera?

I want to make a rather large gondola on wheels that can function like the one in phantom, but not radio controlled, man powerd. Any ideas would be great. I have a large red steel platfrom on wheels which is great, and I can just dress it up with wood and paint to give it the facade of the boat, but I dont know how to move it. I would like to be able to move it with just pushing on a stick like they do in the show, except their’s is not man powered.Any ideas please. Thanks.

You answered your own question.
If you read that whole paragraph you wrote, you’ll find your answer.