Like the previous response said, it is too bad you waited. The WB-LPU dries so quickly, you should be able to do all coats on the entire boat in a day. I thinned all coats about 25%, including the crosslinked coat. I do not think thinning the final crosslinked coat had any effect on the gloss. Thinning the crosslined coat will keep it from drying while it is being applied. The crosslinked coat will dry much quicker than the base coats. If you are applying more than one crosslinked coat, do not wait more than 8 hours between coats or it will require sanding. Best to read the information on the System 3 page.