I love Chicken of the Woods, they are so easy to spot and the haul is usually so big I've never tried growing them but it would be nice to have more close by since they seem to fruit at random times and I miss them sometimes...
firstly you should unwrap and evaluate all those suckers, if some seem dry soak them in a bag of water overnight. Trim them to just below the bottom node (through the bottom of the leaf scar) and optionally a half inch above the top node. If the wood or cambium is discolored you probably want take off another node to get to healthy wood, or keep them where you can watch them cosely cause they will probably sprout fuzz.
The best way to get that many cuttings going is to use plastic tubs roughly the width of the length of your cuttings to layer them in sideways with their bottom ends even with each other to one side. The coir should be moist but not wet at all, it needs to be fluffy with air. Get one brick and add half as much hot water as it says on the package, wait a couple hours then break up enough dry stuff to mix with the wet stuff to make it nice and then measure how much water it takes to get the little bit of dry stuff nice also. Now you know how much water to use, you will still have to break some up by hand but it is easier than squeezing the excess water out. Different brands and types need more or less so I won't tell you how much I use. Light fertilizer in the water is optional, I like Botanicare Pro Grow and seaweed extract for that.
Now you got your lasagna of trimmed and hydrated cuttings so put them someplace that is about 75 degrees. Since you have so many cuttings in there you want to check them often so the roots do not get congested and the callus tissue does not run out of oxygen. So leave them for 10-14 days and then begin checking them by tilting the tub and gently shaking the coir off of the bottom ends. You will need another tub to put the coir, if none in the top row have rooted just keep tilting and shaking and removing coir/rooted cuttings until you have looked at all of the ends and they get a breath of fresh air. If you want to give the tops too (it helps) tilt them the other way after you refill the coir. After that you want to check them once a week at least, more often if they are warmer than 75. I like to get them out when I see good callus and a flared end with cracks that roots will soon emerge from, or tiny roots. This way you are only potting cuttings that developing and not wasting space on the ones that are going to fail anyway. If you want to see lots of roots first (you will break them!) space them far enough apart or do something else.
I wrap the top 2/3 in parafilm at some point before they get potted. Use potting mix that is somewhere between wet and moist, but nowhere near soaked, 2 nodes below the soil line and the base of the cutting above the middle of the container, mound the soil on top and firm to help support the cutting. Do not water them in, mist the surface of the potting soil semi daily if it looks like the top is drying fast. If they have closed buds hooray! you can give those guys some sun right away so the leaves emerge and adjust to the high light, if the buds opened already in the tub you need to put them someplace shady and fairly humid for 2 weeks or so to let that growth harden off first.
I'd use 1-3 gallon fabric containers outside to avoid watering issues, rain disasters and such. I've experimented with rooting hormone but find it completely unnecessary or even counter productive.