How to dry tarps

Maybe it's a bad attitude, but I've never worried about it. Anything that absolutely can't have any moisture on it should already be covered in plastic or crated. If anyone ever commented about wet tarps, I'd just ask them to direct me to their tarp drying station.

 

Never bothered.
If the load is required to be dry, shipper usually has to supply the plastic to go under the tarp, to avoid possible moisture issues....but inherently, there is the possiblity of condensation even when tarped, so it's pretty much up to the shipper how much care they want to take to prepare the load.
I had an alloy load that had to be completely moisture free, or else it would start oxidizing, swell up and not fit in the machinery that was supposed to make parts out of it. That was a pain in the butt load, as it was overweight on the first loading, and I had to have them reload it, so the plastic and tarping was a double job, however, they supplied the plastic...I just had to supply the labor. Most other loads, unless one right after another, wet tarps weren't much of a problem as they tend to dry quick in warm weather, but will be wetter in cold weather, but the tarp is mostly meant to protect from salt or excessive moisture, not a little.
This load was plastic covered, strapped, plastic covered again, and then tarped. If you look near the plastic on the ground, there is a little moisture that came off of it, because the tarp was unable to keep all the water out via either condensation of plastic over plastic or maybe a leak in the tarp or driving rain coming in at the overlap, the sides, or the seams.

 

I'm not sure what else a guy could do other than lay em out in the sun. I wouldn't worry to much about it.

 

How much money have you been spending on rolls of plastic?

Most of these shippers are cheap and won't provide plastic but claim the product cannot get wet... LOL... Oh yeah, and go tarp outside while it's raining...

The only shippers I can really think of that actually provide plastic is tubing places, Bull Moose, Independence tube, etc etc

 

Maybe lay it out and wipe it down with Rain-X? Lol I'm not sure. When I hauled flatbed, I always just laid it out in the grass on a sunny day. If you can store it in a tarp box that'll work. Some trailers have that box in between the spreads on the trailer. I've seen other trucks that have a compartment for tarps on top of the headache rack. That'll at least keep it out of the elements.