Look this aid. Really well made and so effective in terms of helping groove the correct pivot & pressure shift in the swing to utilise ground force and prevent swaying. I have a small weighted swing trainer and have the board just sitting in my lounge room so every time I walk past it, I get a few swings in. Key to a good swing aid is to be easy to use, targeted to a specific purpose & simple and the DownShift board ticks all the boxes