Luckily the bright folks at StoveTec have come up with a solution
(https://stovetecstore.net/product/stovetec-super-pot/), a double-walled cook pot that essentially forms a chimney around your pot to increase heat transfer. It also makes for cleaner hands as the charring is on the inner walls rather than the outside of the pot.
In the spirit of doing things yourself and building from trash, I put together my own Super Pot for my rocket stoves. Here’s a how-to video of how I did it.