Trying out different shapes. In the pictures I used OVERTURE TPU High Speed Filament 1.75mm Flexible 95A TPU Roll, 3D Printer Filament,Dimensional Accuracy +/- 0.02 mm, Fit Most FDM Printer(HS TPU Transparent).

This shape and material throws mid-long range and really corrects for my right handed backhand throw that curves to the left normally. This thing actually curves only slightly to the right and the rolls to the left a little on landing. It seems to go super straight for my bad throwing :)

Let me know how it feels for you. I'm experimenting with weight distributions, materials, and shapes that I see on discs I use.