Best tips for a high handicapper to get reduced?
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Sink your teeth into those 3 threads.
Start a My Swing thread.
Do a lot of reading here: Swing thoughts.
There is a ton of great info on this site, it's on you to make use of it!
Good luck and cheers.
Find a good coach who you trust, practice what he tells you to and commit to any changes. Have a read of these threads are wel;l