You be the judge if they work and help get birds close for the bowhunter. If you're a boom stick hunter then deeks aren't neccesary... I personally enjoy close in my face action with no blind to test my woodsmaship,,, otherwise it's gotten all to easy.
https://m.youtube.com/watch?v=jONU_KjdgYA
Shitty decoys lock up birds... Good realistic decoys bring them rt in. Last 5 years of using DSD decoys I can honestly say without hesitation that 90-95 percent of the birds that have seen my decoy setups came to in and either whooped the jake decoy or humped the hen deeks. That's with 16-20...
I'm as mobile hauling a Dsd jake, submissive hen, and alert hen in one DSD bag as I am with no decoys. Put them over my shoulder and run and gun (bow).