Whats the best design to make a pop pop / putt putt boat go its fastest?

Question

Also, if more heat is applied to the boat would it go faster?

Answer 1

Off hand, I would say you may be able to increase the size of your Boiler. Water Intake and Output pipe size. May try a different hull design. Increasing Boiler temperature may help, but, I thinking more in the Water Pipes. This about all I know.