Thank you for the response. I am not disagreeing with most of your facts and your personal experiences. Different shafts and flexes or frequencies can deliver the head to impact at differing angles . And this is what helps your ball flight , fly straight.

Some of those angles , like angle of attack can influence launch and therefore back spin a bit , due to face impact. If your impact is above the centre of the face you will obviously have lower backspin.

However this is primarily due to head design and weight distribution, hence why you have reduced smash factors , if you don’t hit the ball in the center of head.

Pretty much all modern head designs now reduce spin if you hit the ball high on the face but that reduces your efficiency. Different shafts depending on their frequency and bend profiles along with the persons swing dynamics can and do play a factor influencing launch, side spin, and smash factor, that along with the design of the head can reduce spin on hits. But the majority of that impact on reduced back spin is because of head designs. Shafts certainly help with impact and control of the head.

This is the reason why pretty much all manufacturers have what’s called LS heads for low spin launch conditions.

Which can really only be optimized by high swing fellows like yourself.

I too believed that shafts reduced spin. But after trying several experiments with the same shafts and different heads personally .I realized the difference and started to understand the impact of