Tracing rocker templates

is there some way to trace the rocker off of an existing board to make a rocker template? I have an epoxy board that i wanted to try and copy. The outline is pretty easy to trace, but i can’t figure out a good way to make a rocker template that i can use to hot wire the foam block. thanks. oh yeah, i’ve seen some of the discussions on “copying” boards, but i paid for it, and even if i copy it, i doubt it will stop me from buying another one from that shaper. truth of the matter is, i just like to tinker and i thought it would be fun to see if i could make a good working copy.