When I watched xander schauffele at driving range, Genesis Invitational, I noticed he used a towel in his both armpits. He is one of top players, but he still uses classic practice method. I can easily see people using a towel for their practice at driving ranges. I had done this practice very little, because I couldn’t hit balls well with a towel on my body and got frustrated to practice this way.
One of my biggest frustrated parts on my swing is that my head moves down a lot when I take away clubs. I noticed using a towel help me reduce my head position moving down. Starting 3 days ago, I tried this way again after watching a video about body turn swing. I feel good to get used to this, focusing head position, club path, body turn and impact.