i don't think either would fix with casting..... with the swing glove it just keeps your left wrist flat and you can cock and uncok the wrist but casting is uncocking the wrist early so that is still posable with the glove on. the secret helps you keep your right wrist cupped into impact, i think that might helps casting a bit. they both help with swatting...... to help casting just remember you can't hit the ball from the top so don't try, just unwind from your feet up and only when your club gets to about parrelel with the target then release.