I am in the process of painting my aluminum boat and have the primer and white coats on, but deciding on the blue coat. I have been using the Valspar Tractor Implement Primer and Paints so far. The paint is working and looking great following Woodonglass's paint tips and mixing ratio with the hardener. The only problem is I don't think I will like the Ford Blue on the boat. I would like to go with a Navy Blue. How good is the Rustoleum Marine paint compared to the Valspar Tractor Implement? Will the same mixing ratio with the hardener work for the Rustoleum? Any suggestions? Thanks