I just put a new coat of Interlux Brightside on my kayak to improve the finish and repair some scratches. Overall, this is the fourth coat of Brightside. The finish looks great with the exception of one three inch area where the paint slumped where I was covering a scratch. Can I just sand the slump and repaint that area, or do I need to repaint the entire boat. My perfectionisn is keeping me awake at night! I would love to have the boat look perfect.