What should be used as cover for the plane captain during a mishap with a tail wheel?

Using a tow tractor as cover for the plane captain during a mishap with a tail wheel is appropriate because the tow tractor is specifically designed for ground movement of aircraft and has substantial mass and structural integrity. It can provide solid protection against potential hazards and debris in the event of an unforeseen incident involving the aircraft, particularly during an emergency where an aircraft may shift or roll unexpectedly.

The tow tractor is also positioned in such a way that it is easily accessible for a plane captain, who may need to maneuver rapidly to a safe location. Additionally, its weight and solid construction mean it is less likely to be moved or displaced compared to lighter structures or equipment, ensuring the plane captain has reliable cover in a critical situation.

Other options like a cargo trailer, fuel truck, or ground control cart, while they may provide some level of cover, do not offer the same balance of mobility, accessibility, and protective capabilities as a tow tractor. Hence, choosing a tow tractor is the most practical and safe choice in this scenario.