Detailing is my thing! Waterless washes are great when used inside their lane. A waterless wash should be used more like a detail spray where a bit more cleaning power is needed over a standard Quick Detailer. I would never do an entire vehicle with a waterless method. If the whole car needs cleaning and I don't feel like a soap bucket, or it needs it but it's not quite bad enough for the soap bucket, I go with the rinseless method. That one had grown on me and I've become quite the fan.
As mentioned, one of the many blasters out there (or a good 'ol lawn blower; provided you know it's clean inside) is what you're looking for to combat the water out of the cracks all the time. After washing, sheet the standing water off the car with a steady stream of water from the hose, then use the blower to get all the nooks and crannies, and then dry with your favorite microfiber towel and a quick detailer as a drying aid.
I have all but converted to 100% Adam's products...go check them out.