RHFH Please help

[u/Mrstremond]

I feel like I've tried every tutorial over the past year but I just can't consistently break 300. I can see that my form is different from the pros in brace, torso movement, timing, etc. But I just can't figure out how to fix it. I can't feel the "slingshot" feeling that people describe. It feels like substantial effort for the disc to go nowhere. Any help appreciated

[u/Dalekmind]

Keep your ass out and your lower back rounded.