One of our many winter projects will be re-sodding around catch basins in fairways and raising irrigation heads which has been an ongoing project. Over the last 10 years, we have really committed to an aggressive sand topdressing program on fairways. by adding a 1/4" to 1/2" of sand to fairways each year, our sprinkler heads are slowly getting deeper as the surface is raised via the sand cap. This requires us to go back and raise the heads to ground level. In the case of basins, we reslope the ground down to the top of the basin.