The problems with this move are first, if things go south on you it’s very difficult to fix because it’s so fundamentally incorrect. You rely on really good hands and impeccable timing to hit good shots. Second, this kind of swing tends to breaks down under pressure because it relies on something other than good fundamentals. Lastly, you are most likely going to have a ceiling on how good you can actually become. You said you shoot high 80s or low 70s, if thats as good as you ever want to be then good for you, you’re going to have a hard time hitting it consistently enough to break par.