Its a tool I guess. I have always just had another shooter stand right behind me. I shoot at lot of ATA trap, about 15,000 shells a years,
I'm not a skeet guy but my questions would be.....are you using the same shotgun for ducks as you are in skeet? Same choke (I doubt) and same shells (I doubt)
You might be better severed with several chokes and several types of waterfowl shells and spending the day at a patterning board. It is rather boring.
Since your misses are in a blind, I guess is that your feet and hips did not allow you to swing through and your misses are actually behind from stopping the gun.
Take it with a gain of salt, just the random thoughts of a guy who spends 4 days a week and every extra penny shooting a shotgun