Sorry if it's already been discussed. I googled & read but didn't find anything. Has anyone used a 30 quart stainless steel mixing bowl for a lid? Seems to be about the right diameter @ 22". They're ~$25.. Cheers!!!
That is a great idea; coupled with Mushcreeks's advice for a lip. I did some checking and found 30-quart mixing bowls at 22 & 5/8 and 22.5 like this one:
http://www.cometsupply.com/mp/ADMIRAL+CRAFT/pm/ADCSBL30/r/gg/