Go to Home Depot and buy a bag of playground sand and a window screen. Go to the flooring department and buy a product called Acrylic Mortar Admix. Buy an 18” squeegee. Buy 2 5-gallon buckets and 1 1-gallon bucket. Find a hardware store or lumberyard that sells white cement.

After screening the sand, use the 1-gallon bucket to mix 2 parts sand to1 part white cement. Box back and forth into empty 5-gallon bucket until thoroughly mixed.
Put 1 and ¼ gallons of acrylic modifier into a 5-gallon bucket. Then mix your concrete into the acrylic modifier to a consistency of a pancake mix. Pour this mix the entire width of your pool. Pull back with your squeegee over the highs and filling the lows. Next day sand down the ridges. You now have a very smooth floor that is ready for the UltraGuard bond coat.