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Narrow body with front wheels outboard which gives less area but worse drag coefficient? Or wider body, enclosing the wheels, having more area but better drag coefficient?
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It depends on what you come up with. You have to have estimates for both configurations then compare.
IMHO, the real world contains too many strong crosswinds to make only looking at the 0 deg yaw condition worthwhile. I also think separate pontoon fenders have the disadvantage in crosswinds. *warning* I have no empirical case studies of this.