I do bodywork for a living and ive sprayed enamel a thousand times. The hardner needs to be the one that is meant for the paint you are using otherwise it may or may not harden up and you don't wanna try to remove paint that wont dry or harden. From my experience the best paint for a boat is basecoat clear coat. The green or brown stains that normally are hard to get off of hulls washes right off with little to no effort. Its not durable as far as banking your boat or banging rocks but looks better then a same as everyone elses camo boat. That enamel will also look good but it will eventually dull and become chalky and you may even see Color wash off because it has no protection from elements. It'll start on the bottom and end up all over. Need to wax the boat quiet often durring use!
