Lay it out as thin as possible on a large piece of plastic, like a garbage bag cut in half and laid flat. Should dry in no time.
Also, depending on the species and how wet the coco fibre is, you could just let it dry on it's own in the enclosures.
I've take a microwave safe dinner plate and placed a heaping portion and nuked it for a few minutes.
You have to watch tho because it will steam up and get very, very hot!
I stop every minute or half minute to move around the substrate with a spoon or something similar to get the more moist areas moved around and typically within a few mins it's bone dry.
Use caution though because I tried on the same type of dinner plate but a smaller version and it ended up exploding inside the microwave. I believe it just go too hot and it popped up and BANG! into several hundred if not thousand shards
I've done this so many times on a large plate though I'll do it again and honestly think something was wrong with the plate itself and the added heat just stressed it to the point of bursting.
Remember to use pot/pan holders cause the plate is extremely hot and you'll have to let it cool or spread it over a cool cookie sheet and it's ready to use in just another few minutes.
This is a pain in the carpace to do if you do not have the luxury of a warmer climate and need the coco fiber asap. This process requires close attention and monitoring do not leave substrate unattended in oven.
You will need Aluminum foil,
Plastic cups for moving substrate.
Plastic spoons or forks for rotating/grading substrate
Here is what I do to get it dry.
After wetting it
I have cut a milk jug in half or used another bucket
Take chunks of the coco fibre and squeeze the moisture out of it into milk jug or other bucket, set the squeezed fiber aside.
I take 3 cookie sheets lined with aluminum foil and spread it out as thin as possible I place on convection bake @ 230-250 degrees (do not go up to 400 i have burnt the coco fiber ) you will see the color change in the oven from dark to light.
keep moving the soil every 10 min or so to get the moisture out.
I then lined my entire kitchen table with foil and layed the baked substrate out on it as thin as possible I used 1 clean fan and had it on setting 1-2 to further dry and cool the substrate keep rotating it.
The whole house smells of baking substrate almost better than the smell of thanksgiving
btw make sure you keep a vacuum cleaner at the ready.
And don't forget your potholders and a good Tarantula book to read