How do you paint the rocks above the pool line and the white part below the water line. The pool is pebble Tech. Also someogf the rock have a few hairline cracks, what product do I use to fill those before painting. The old paint on the rocks is chipping a bit and the deck, do I need to power wash the deck or paint over the deck, rocks, and then use a sealer. This is an in ground pool withan above jacuzzi all surounded by large synthetic rocks and three waterfalls. What is the cheapest way yo do this or what pric would a professional charge, guesstimate.