You know, people build therfe kayaks in some wonky places. While a lot of folks recommend soap and water for removing amine blush, if this boat is being built in your living room or the like...its impractical, especially in winter. What I had great success with , and dnged near no mess at all was a spray pump bottle of 50% alcohol and water and a slew of cotton rags bought from home depot. Spray the stuff on and rub off. Repeat till the hull is so dry it squeeks.

Pete