re: I have a sack of crawfish I need to hold until tomorrow afternoon. Whats best to keep them

Ask Yellowfin.

Baw knows his stuff.

Get a sack that's a similar color but big enough to fit your entire body in, then crawl inside and lay next to the other sack. Then talk to them and tell them they need to soldier on until the next day when they can all be freed. Tell them you too are a crawfish and you've been through this cycle several times. They will probably believe you because they're not very smart.

I put mine in an ice chest, pull plug, prop up opposite end of plug with a brick or something, and then throw 2 bags of ice on them, unopened. close the lid, but not all the way, with a little crack. Allows the melted ice condensate over them, with oxygen to breathe and the water drains out so none drown

Leave them in the sack, find an ice chest or container that will fit them laying down. Cover with ice, and make sure the container is tilted to drain any standing water. Obviously have a low point drain open

Just spray the bastards down good in sack every now and then