I use zip-ties to hold the legs together and duct tape to secure the wings to their sides. I first soothe the birds into a trance, zip their legs together, and wrap some duct tape a couple times around their bodies. Last time I hypnotized the birds so deeply they sounded like they were snoring as they lay still on the table getting tied & wrapped.
I use a reclaimed porch swing frame to hang the birds from. I made hooks from heavy wire to hang the birds' zip-tied legs upon. I hang the birds, slice their necks, and let them bleed into a big garbage can with a black plastic liner. (I like using black so the blood doesn't show up as harshly) I like having them hanging from the hooks because I take them off & re-hook them a few times before we go to the cutting table. I hang them to slice & bleed, then take them off to dunk in the scalding pot, re-hang them to pluck (by hand), sometimes unhook a couple of times to scald a bit more.
I use the same lined garbage can to drop the plucked feathers in, and also to toss the heads, feet & intestines. My laying hens are usually circling the cutting table like a school of hungry sharks, waiting to be given all the tasty organs I pull out.
I like the idea of the strawberry huller as a lung scraper. Sometimes I'll use a grapefruit spoon, like a teaspoon with serrated edges. Although I find it's needed more on the lower back, where those icky bits around the kidneys & those nasty little tubes stick to the back. Usually I can get the lungs out just using my fingers, encased in plastic gloves, of course!