I'm looking forward to shape my first own shortboard for waves from waist to overhead height. I first started with a single concave and quickly thought that I could make it end with a double for smaller waves with less speed . This is where things got really complicated. I thus ended up with two versions; one with a single concave, as I thought my imperfection would have less impact, and one with a single to slight double that left me with a lot of questions that I couldn't answer searching on internet.
In both case, I can't really tell if the depth and transition between concaves is in the right place so I could use some help.
Both boards have almost exactly the same dimensions and rocker, and even if the concave type is different, both have the deepest concave (almost 0.26") point slightly behind the middle.
Here's images so you can see all the specs. (the red line shows where the sections are made and the blue line shows the concave evolution)