Get rid of the Jake, use just the hen.
Jakes are angry teenagers that usually travel in gangs.They will torment mature birds. Witnessed it
a lot.
And most Jake decoys produced are postured wrong. The only Jake decoy I have seen work consistently is All because or his posture. As Arrow said. I've got Jake decoys used only for flower bed enhancements.

Second not all strutting Toms are dominant. As others have said he may had his hind end whipped. You see that also using a strutting decoy. You always have a 50-50 chance the Tom will stop short.

And some Toms just stop short. They will strutt, do their dance hoping to lure a hen or two their way.

After all why do Toms strutt?
They want to get laid. And if Jenny hen says not today,
maybe tomorrow the Tom follows dutifully along , in strutt until Miss Jenny changes her posture and lays down.

My two cents
Watch how birds react with each other and place your decoys similar.
AND YES you still will have times leaving you scratching your head.

JW