I have used a food dehydrator. It works great and is fast. Last year I made a large screen, put the hops on and left it in the van for a week. A hot car is bad of dogs and kids, but works great for hops. Smelled real good in there for a few days.
Also, sometimes the best way to rescue a batch is dump it and start over.
I've only had to dump two batches in 7 yrs. Last one was a lager. I pulled it out of the fridge for a diacetyl rest. Let it sit on the counter for a week while I forgot about it and then we had a 3 day heat wave at the end of may. By the time I got to it, it tasted pretty bad.