I own an Irrigation Company. The best and most efficient way to water is definatley "sprinklers" / irrigation. When you use a hose you always end up over watering some areas and under watering the others. The heads we use at our track are Hunter PGH "High Pop" sprinkler heads. They pop-up 12" off the ground once pressurized and they will be flush or a little sunk in the track when off. This allows the heads to not be seen or hit bye a vehicle.

Sprinkler head technology has greatly increased due to major watering restrictions in todays world. Each head if spaced properly will cover exactly the same amount as the other sprinkler if you use "head to head" coverage. They heads have variable nozzles available, so a head in the corner can use a 2.0 gallon per minute (GPM) nozzles and a 180 can use a 3.0 GPM and the 360 heads in the center use 4.0 GPM. The "Rain Curtain" nozzles allow for complete even coverage.

If you email me the information to [email protected], I can have my designer put togther a CAD drawing and specs. I will need to size of the water source, static pressure, distance from meter to track, size of track and whether you want the valves to be run electric or manual. If you can use electric, then you can soak the track the night before the race.

Let me know.