i haven't drilled any holes there so water does build up when i wash it. and the paint has been peeling off in that spot ever since i bought it so i guess the previous owner just let the water sit there sometimes. but i just dry it out with a rag whenever i wash the car or have it out in the rain, as the car only really sees rain maybe twice a year on two unlucky days
however another way of drying it out is simply accelerating onto the highway and all of the standing water will dissapear
