I was close. Looks like "inspired" by the Herring rockered-out potato chips. He surfed so well on those, but don't think many others could...
[from
https://www.realwatersports.com/collections/slater-designs-banana]
Slater Designs Banana
Inspired by the extreme rocker boards that Greg Webber and Shane Herring developed in the early 90’s, the BANANA is a far more user-friendly version that Kelly and Greg developed for intermediate to advanced surfers.
DIMENSIONS
5'4" x 17.625" x 2.00" | 19.90
5'6" x 18.125" x 2.125" | 22.40
5'8" x 18.25" x 2.25" | 24.50
5'10" x 18.437" x 2.25" | 25.60
5'11" x 18.75" x 2.312" | 27.30
6'0" x 19.00" x 2.375" | 28.50
6'1" x 19.25" x 2.50" | 30.90
6'2" x 19.50" x 2.50" | 32.20
6'4" x 19.812" x 2.625" | 35.00
6'6" x 20.25" x 2.75" | 38.40
6'8" x 21.00" x 2.875" | 42.60
FROM THE SHAPER
EDIT: went down a google rabbit hole on the Banana. This was an interesting review:
www.swellnet.com