Originally Posted by iijakii
I'm a big fan of 1 and 2 vessel brewing setups but don't even consider BIAB on larger batches. You'll hate it. Beyond the mess and weight of it all, it also really takes away the spirit of BIAB. Instead of just using a bag, you need to have a basket so you don't keep ripping bags, then a winch, etc it just makes it just as complex as adding a proper mash tun IMHO.
I do mostly 5 gallon BIAB batches, but I could certainly do a 10 gallon batch without a basket, a winch, or a real worry about the bag ripping. I slide a round grill grate under the bag when I lift it, so I can rest it over the kettle. Works for me. Another trick is to drain the kettle into a bucket or two before lifting the bag, if you need to lighten the bag before lifting.
I have posted this before but here is 26 lbs. of grain and 12 gallons of water in a 15 gallon pot, yielding 6 gallons of a high-gravity RIS our club brewed a couple of years ago for the Big Brew Day. I tend to be well suited for lifting heavy things.