In the summer when the radiators are never on I always used to use a hairdryer.
Well, I have a tumble dryer now so I use that instead.
But in the winter radiators are the way forward, doesn't take long to try them once they're hot, just keep flipping them over.
Also, putting them on a fast spin in the washing machine drys them out a bit if you don't do that already. I always put mine on one after they're done washing.