Model Boat Suppliespropellers I Have To Make A Model Boat Go Across A Pond In Less Then 3 Mins, Whats The Best Design?

I have to make a model boat go across a pond in less then 3 mins, whats the best design? - model boat suppliespropellers

For my classes I have to. I can not buy parts for the boat model is designed for boats spefically Exampel model for developers. What better way is to get the boat into the pond?
I thought maybe with candles or possibly even rocket fuel or something.
Any advice would be grateful.
Thanks