The discussion centers on whether a Yamaha 440 snowmobile engine can support a total load of 130 pounds, consisting of an 85-pound engine, a 45-pound deck, and the operator. Participants emphasize the importance of selecting a propeller that provides maximum thrust, suggesting hovercraft-specific options available online. The horsepower of the Yamaha engine is clarified to be 50 HP, which raises questions about the overall design and dimensions of the hovercraft. Additional details about the construction materials, including a plywood deck and fiberglass-covered foam, are shared. The conversation encourages further exploration of the hovercraft's specifications and performance calculations.