In order to get 5 degrees of temperature rise, you need 42 BTU per Gallon of pool water. Not sure what your pool size is but the best panels on the market will deliver about 1000 BTU/sqft/day of heat which means you would need 42 sq-ft of panels per 1000 gallons of pool water to get a 5 degree rise per day.

200' of 3/4" hose is 12.5 sq-ft. In a 10000 gallon pool, at the very most you could expect 0.15 degree rise per day and I am being generous. It is even less at the beginning and end of season because of air temperature.