Mobile home..water sitting on pad.?

I'm putting in a double wide mobile home onto my property...Ive got concrete runners installed on a clay pad, the top of the runners are "flush" with the pad itself. The pad slopes away from the concrete runners but rain does not run off when it gets on top of the pad itself .In fact the rain water just sits on top of some of the runners (in some areas over a inch deep) because there are mounds of dirt in between each runner...Should I level out the mounds? or should i put more dirt in on top of the runners? . Today is Wed. and I'm moving the home in on Monday. It rained lastnight and there is water on a few of the runners just as ive been talking about...With sunlight, it will evaporate in notime but once the house gets in im worried this wont be the case...Although the clay pad and runners are above the "regular" ground level im pretty sure rain water will eventually get under the house after i move it in and i wouldnt want it standing on the runners for long...Any advice is apprecia

Mobile home..water sitting on pad.?
Try using sharp sand instead of dirt in between the runners.