There is no ideal solution to this dilemma. Acrylic is hard, scratch resistant, but shatters under impact. Polycarbonate is soft, easily scratched but it can take the impacts.
Fishermen, the customer base, can put up with the scratches. What they cannot abide is breakages.
For me, poly would be the way to go every time.
I wish I had the funds to develop and prototype my triple point lure, funds and materials are holding me back, otherwise I would be tempted to throw it your way for a limited production run. What I need is my own 3D Printer.
As for design, all the materials available have roughly the same density, around 1.2g/cm2, so interchange of materials is not an issue.
Dave