I have been making a living cleaning and detailing vehicles and the pressure washer I use cost $79.99 4 and a half years ago. You really should invest in one because it will really make jobs like this much much easier.I have also been making a living doing this kind of work for 44 years.
When you rinse a vehicle off in this condition, use a pressure nozzle to rinse it off. Don't do the rinse like you would rinse your car or truck, rinse a little slower so you really get that mold off. Just some friendly advice.
