Thanks Sam T. for this great upload. It also motivated me to finally learn to use Meshmixer. I had to cut the surf-board in 2 pcs, cause it would not fit my Ender 3 Pro, plus I wanted to cut off legs and print separately, so that I would use less support (that would mess up some areas) and less sanding (debatable). It is still in sanding stage, but I posted some pics to get an idea. Might edit later with final product. Thanks again to Sam T.
Edit: Uploaded some pics of finished project. You can see that seams from meshmixer are invisible thanks to some good old fashioned sanding. The glueing on the board however did not work out as well, should have kept at it some more. However, I am very proud of end result, since it's one of my first projects.